From 69ff44257d3915bb060c88dad9b61a91dc2270ca Mon Sep 17 00:00:00 2001
From: "daniel.hutzschenreuter@ptb.de" <daniel.hutzschenreuter@ptb.de>
Date: Fri, 21 Jun 2024 09:51:29 +0200
Subject: [PATCH] Update examples to version 2.2.1.

Signed-off-by: daniel.hutzschenreuter@ptb.de <daniel.hutzschenreuter@ptb.de>
---
 CHANGELOG.md                                           |  5 +++++
 README.md                                              | 10 ++++++----
 SI_Format.xsd                                          |  2 +-
 examples/BRONZE/2020-03-20-UM-BRONZE-examples.xml      |  8 ++++----
 .../BRONZE/2021-11-22-BRONZE-examples-xmllists.xml     | 10 +++++-----
 examples/BRONZE/2022-05-23-BRONZE-examples.xml         | 10 +++++-----
 examples/BRONZE/PTB-BRONZE-examples-2.xml              | 10 +++++-----
 examples/BRONZE/PTB-BRONZE-examples.xml                | 10 +++++-----
 examples/GOLD/2020-03-20-UM-GOLD-examples.xml          |  8 ++++----
 examples/GOLD/2021-10-26-GOLD-examples-xmllists.xml    | 10 +++++-----
 examples/GOLD/2022-05-23-GOLD-examples.xml             | 10 +++++-----
 examples/GOLD/PTB-GOLD-examples-2.xml                  | 10 +++++-----
 examples/GOLD/PTB-GOLD-examples.xml                    | 10 +++++-----
 examples/GOLD/gold-test.xml                            |  8 ++++----
 .../IMPROVABLE/2020-03-20-UM-IMPROVABLE-examples.xml   |  8 ++++----
 .../2021-11-23-IMPROVABLE-examples-xmllists.xml        | 10 +++++-----
 examples/IMPROVABLE/2022-05-23-IMPROVABLE-examples.xml |  8 ++++----
 examples/IMPROVABLE/PTB-IMPROVABLE-examples-2.xml      | 10 +++++-----
 examples/IMPROVABLE/PTB-IMPROVABLE-examples.xml        | 10 +++++-----
 examples/IMPROVABLE/improvable-test.xml                |  8 ++++----
 examples/NOT PASSED/UM58-D-SI-example.xml              |  4 ++--
 examples/NOT PASSED/UM59-D-SI-example.xml              |  4 ++--
 examples/NOT PASSED/UM60-D-SI-example.xml              |  4 ++--
 examples/PLATINUM/2020-03-20-UM-PLATINUM-examples.xml  |  8 ++++----
 .../PLATINUM/2021-10-26-PLATINUM-examples-xmllists.xml | 10 +++++-----
 examples/PLATINUM/2022-05-23-PLATINUM-examples.xml     | 10 +++++-----
 examples/PLATINUM/2023-03-31-PLATINUM-examples-1.xml   |  8 ++++----
 examples/PLATINUM/PTB-PLATINUM-examples-2.xml          | 10 +++++-----
 examples/PLATINUM/PTB-PLATINUM-examples.xml            | 10 +++++-----
 examples/PLATINUM/platinum-test.xml                    |  8 ++++----
 examples/SI-Accelaration-examples.xml                  |  8 ++++----
 examples/SILVER/2020-03-20-UM-SILVER-examples.xml      |  8 ++++----
 .../SILVER/2021-11-22-SILVER-examples-xmllists.xml     | 10 +++++-----
 examples/SILVER/2022-05-23-SILVER-examples.xml         |  8 ++++----
 examples/SILVER/PTB-SILVER-examples-2.xml              | 10 +++++-----
 examples/SILVER/PTB-SILVER-examples.xml                | 10 +++++-----
 examples/SILVER/silver-test.xml                        |  8 ++++----
 examples/SI_Format_TestData.xsd                        |  8 ++++----
 examples/SmartCom_A1.2.3_examples.xml                  | 10 +++++-----
 qudt/quantitykind.xsd                                  |  8 ++++----
 40 files changed, 173 insertions(+), 166 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 59c4d18..fe894f3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 2024-06-21
+
+* Completed list of allowed unit identifiers in the WIKI [>> units list](wiki/doc/UnitSystem.md)
+* Fixed bug of misplaced uncertainty value types in XML schema
+
 ## 2023-11-30
 
 Documentation of all updates [>> Wiki](wiki/doc/Updates_2_2_0.md)
diff --git a/README.md b/README.md
index 2dfa1a6..a1f071f 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 <div align="center">
   <a href="https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si" traget="_blank"><img src="wiki/doc/D-SI1.PNG" alt="D-SI Logo" width="500"/></a>
   <br />
-  XSD Version 2.2.0
+  XSD Version 2.2.1
   <br /><br />
 
 </div>
@@ -12,6 +12,8 @@ This repository contains the XML Schema Definition (XSD), a documentation and ex
 
 ## Recent Updates
 
+`News: The minor update to version 2.2.1 has fixed some bug in the XML Scheme and adds a complete list of allowed unit IDs (WIKI).` 
+
 `News: The update to version 2.2.0 has been rolled out adding new features such as kinds of quantities and a standard measurement uncertainty element.` 
 
 `News: Our units representation system is now supporting the new SI prefixes and several more units for dimension one quantities such as percent.` 
@@ -42,13 +44,13 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 
 
 
-## Access to D-SI XSD version 2.2.0
+## Access to D-SI XSD version 2.2.1
 
-* D-SI XSD version 2.2.0 @ [https://www.ptb.de/si/v2.2.0/SI_Format.xsd](https://www.ptb.de/si/v2.2.0/SI_Format.xsd)
+* D-SI XSD version 2.2.1 @ [https://www.ptb.de/si/v2.2.1/SI_Format.xsd](https://www.ptb.de/si/v2.2.1/SI_Format.xsd)
 
 * Latest D-SI XSD version @ [https://www.ptb.de/si/SI_Format.xsd](https://www.ptb.de/si/SI_Format.xsd)
 
-* XSD for D-SI example files [https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd](https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd)
+* XSD for D-SI example files [https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd](https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd)
 
 
 ## Development
diff --git a/SI_Format.xsd b/SI_Format.xsd
index ef65785..a491cfa 100644
--- a/SI_Format.xsd
+++ b/SI_Format.xsd
@@ -40,7 +40,7 @@
     </xs:annotation>
     
 	<!-- Importing used namespaces -->
-    <xs:import namespace="http://qudt.org/vocab/" schemaLocation="https://www.ptb.de/si/v2.2.0/qudt/quantitykind.xsd"/>
+    <xs:import namespace="http://qudt.org/vocab/" schemaLocation="https://www.ptb.de/si/v2.2.1/qudt/quantitykind.xsd"/>
     
       
 
diff --git a/examples/BRONZE/2020-03-20-UM-BRONZE-examples.xml b/examples/BRONZE/2020-03-20-UM-BRONZE-examples.xml
index e093316..8697710 100644
--- a/examples/BRONZE/2020-03-20-UM-BRONZE-examples.xml
+++ b/examples/BRONZE/2020-03-20-UM-BRONZE-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation=" https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation=" https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
 		Copyright (c) 2019 - 2021 University of Maribour (UM), all rights reserved. 
 			
 		Authors:            Bojan Acko, Rok Klobucar
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class BRONZE (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class BRONZE (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="UM10">
diff --git a/examples/BRONZE/2021-11-22-BRONZE-examples-xmllists.xml b/examples/BRONZE/2021-11-22-BRONZE-examples-xmllists.xml
index 83d0a1d..5a710aa 100644
--- a/examples/BRONZE/2021-11-22-BRONZE-examples-xmllists.xml
+++ b/examples/BRONZE/2021-11-22-BRONZE-examples-xmllists.xml
@@ -4,15 +4,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
     
     <!--
-		Copyright (c) 2022-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2022-2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Justin Jagieniak, Benjamin Glogeer
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -28,7 +28,7 @@
       -->
     
     <siTest:metaData>
-        <siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.0)</siTest:testDescription>
+        <siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.1)</siTest:testDescription>
     </siTest:metaData>
     
     <siTest:testData id="PTB630">
diff --git a/examples/BRONZE/2022-05-23-BRONZE-examples.xml b/examples/BRONZE/2022-05-23-BRONZE-examples.xml
index fd68871..aeb0a76 100644
--- a/examples/BRONZE/2022-05-23-BRONZE-examples.xml
+++ b/examples/BRONZE/2022-05-23-BRONZE-examples.xml
@@ -4,15 +4,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd" >
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd" >
     
     <!--
-		Copyright (c) 2022-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2022-2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Justin Jagieniak, Benjamin Glogeer
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -28,7 +28,7 @@
       -->
     
     <siTest:metaData>
-        <siTest:testDescription>XML examples including quantity type for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.0)</siTest:testDescription>
+        <siTest:testDescription>XML examples including quantity type for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.1)</siTest:testDescription>
     </siTest:metaData>
     
     <siTest:testData id="PTB700">
diff --git a/examples/BRONZE/PTB-BRONZE-examples-2.xml b/examples/BRONZE/PTB-BRONZE-examples-2.xml
index f360141..ab2f3ba 100644
--- a/examples/BRONZE/PTB-BRONZE-examples-2.xml
+++ b/examples/BRONZE/PTB-BRONZE-examples-2.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
-		Copyright (c) 2019 - 2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
+		Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class BRONZE (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class BRONZE (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="PTB534">
diff --git a/examples/BRONZE/PTB-BRONZE-examples.xml b/examples/BRONZE/PTB-BRONZE-examples.xml
index 2a4b38b..798c5b4 100644
--- a/examples/BRONZE/PTB-BRONZE-examples.xml
+++ b/examples/BRONZE/PTB-BRONZE-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
-		Copyright (c) 2019 - 2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
+		Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901	
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class BRONZE (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class BRONZE (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="PTB55">
diff --git a/examples/GOLD/2020-03-20-UM-GOLD-examples.xml b/examples/GOLD/2020-03-20-UM-GOLD-examples.xml
index 9e9895a..2817cd8 100644
--- a/examples/GOLD/2020-03-20-UM-GOLD-examples.xml
+++ b/examples/GOLD/2020-03-20-UM-GOLD-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
 		Copyright (c) 2019 - 2021 University of Maribour (UM), all rights reserved. 
 			
 		Authors: 			Bojan Acko, Rok Klobucar
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-01-26		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class GOLD (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class GOLD (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 
 	<siTest:testData id="UM4">
diff --git a/examples/GOLD/2021-10-26-GOLD-examples-xmllists.xml b/examples/GOLD/2021-10-26-GOLD-examples-xmllists.xml
index 76e1828..8fa7852 100644
--- a/examples/GOLD/2021-10-26-GOLD-examples-xmllists.xml
+++ b/examples/GOLD/2021-10-26-GOLD-examples-xmllists.xml
@@ -4,15 +4,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
     
     <!--
-		Copyright (c) 2022-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2022-2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Justin Jagieniak, Benjamin Glogeer
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -28,7 +28,7 @@
       -->
     
     <siTest:metaData>
-        <siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.0)</siTest:testDescription>
+        <siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.1)</siTest:testDescription>
     </siTest:metaData>
     
     <siTest:testData id="PTB633">
diff --git a/examples/GOLD/2022-05-23-GOLD-examples.xml b/examples/GOLD/2022-05-23-GOLD-examples.xml
index d593382..112e717 100644
--- a/examples/GOLD/2022-05-23-GOLD-examples.xml
+++ b/examples/GOLD/2022-05-23-GOLD-examples.xml
@@ -4,15 +4,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
     
     <!--
-		Copyright (c) 2022-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2022-2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Justin Jagieniak, Benjamin Glogeer
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -28,7 +28,7 @@
       -->
     
     <siTest:metaData>
-        <siTest:testDescription>XML examples including quantity type for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.0)</siTest:testDescription>
+        <siTest:testDescription>XML examples including quantity type for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.1)</siTest:testDescription>
     </siTest:metaData>
     
     <siTest:testData id="PTB701">
diff --git a/examples/GOLD/PTB-GOLD-examples-2.xml b/examples/GOLD/PTB-GOLD-examples-2.xml
index e05c333..6ddb198 100644
--- a/examples/GOLD/PTB-GOLD-examples-2.xml
+++ b/examples/GOLD/PTB-GOLD-examples-2.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
-		Copyright (c) 2019 - 2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class GOLD (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class GOLD (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	
diff --git a/examples/GOLD/PTB-GOLD-examples.xml b/examples/GOLD/PTB-GOLD-examples.xml
index aa85849..85db8be 100644
--- a/examples/GOLD/PTB-GOLD-examples.xml
+++ b/examples/GOLD/PTB-GOLD-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
-		Copyright (c) 2019 - 2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
+		Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class GOLD (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class GOLD (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="PTB7">
diff --git a/examples/GOLD/gold-test.xml b/examples/GOLD/gold-test.xml
index 70f851b..b663b4a 100644
--- a/examples/GOLD/gold-test.xml
+++ b/examples/GOLD/gold-test.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
 		Copyright (c) 2019 - 2021 Ostfalia HAW, all rights reserved. 
 
 		Authors:			Bernd Müller, Lukas Heindorf
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class GOLD (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class GOLD (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="GOLD-TEST-1">
diff --git a/examples/IMPROVABLE/2020-03-20-UM-IMPROVABLE-examples.xml b/examples/IMPROVABLE/2020-03-20-UM-IMPROVABLE-examples.xml
index bea2fc2..2c08325 100644
--- a/examples/IMPROVABLE/2020-03-20-UM-IMPROVABLE-examples.xml
+++ b/examples/IMPROVABLE/2020-03-20-UM-IMPROVABLE-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
 		Copyright (c) 2019 - 2021 University of Maribour (UM), all rights reserved. 
 			
 		Authors: Bojan Acko, Rok Klobucar
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="UM2">
diff --git a/examples/IMPROVABLE/2021-11-23-IMPROVABLE-examples-xmllists.xml b/examples/IMPROVABLE/2021-11-23-IMPROVABLE-examples-xmllists.xml
index bd777f7..0b1910a 100644
--- a/examples/IMPROVABLE/2021-11-23-IMPROVABLE-examples-xmllists.xml
+++ b/examples/IMPROVABLE/2021-11-23-IMPROVABLE-examples-xmllists.xml
@@ -4,15 +4,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
     
     <!--
-		Copyright (c) 2022-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2022-2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Justin Jagieniak, Benjamin Glogeer
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -28,7 +28,7 @@
       -->
     
     <siTest:metaData>
-        <siTest:testDescription>XML examples for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.0)</siTest:testDescription>
+        <siTest:testDescription>XML examples for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.1)</siTest:testDescription>
     </siTest:metaData>
 
     <siTest:testData id="PTB638">
diff --git a/examples/IMPROVABLE/2022-05-23-IMPROVABLE-examples.xml b/examples/IMPROVABLE/2022-05-23-IMPROVABLE-examples.xml
index a8fce38..45c11fe 100644
--- a/examples/IMPROVABLE/2022-05-23-IMPROVABLE-examples.xml
+++ b/examples/IMPROVABLE/2022-05-23-IMPROVABLE-examples.xml
@@ -4,15 +4,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
     
     <!--
 		Copyright (c) 2022-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Justin Jagieniak, Benjamin Glogeer
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -28,7 +28,7 @@
       -->
     
     <siTest:metaData>
-        <siTest:testDescription>XML examples including quantity type for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.0)</siTest:testDescription>
+        <siTest:testDescription>XML examples including quantity type for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.1)</siTest:testDescription>
     </siTest:metaData>
 
     <siTest:testData id="PTB702">
diff --git a/examples/IMPROVABLE/PTB-IMPROVABLE-examples-2.xml b/examples/IMPROVABLE/PTB-IMPROVABLE-examples-2.xml
index 0607726..eee2664 100644
--- a/examples/IMPROVABLE/PTB-IMPROVABLE-examples-2.xml
+++ b/examples/IMPROVABLE/PTB-IMPROVABLE-examples-2.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
-		Copyright (c) 2019 - 2021  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="PTB502">
diff --git a/examples/IMPROVABLE/PTB-IMPROVABLE-examples.xml b/examples/IMPROVABLE/PTB-IMPROVABLE-examples.xml
index 1512a14..9cd2072 100644
--- a/examples/IMPROVABLE/PTB-IMPROVABLE-examples.xml
+++ b/examples/IMPROVABLE/PTB-IMPROVABLE-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
-		Copyright (c) 2019 - 2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
+		Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="PTB17">
diff --git a/examples/IMPROVABLE/improvable-test.xml b/examples/IMPROVABLE/improvable-test.xml
index 00d0c05..17d59eb 100644
--- a/examples/IMPROVABLE/improvable-test.xml
+++ b/examples/IMPROVABLE/improvable-test.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
 		Copyright (c) 2019 - 2021 Ostfalia HAW, all rights reserved. 
 
 		Authors:			Bernd Müller, Lukas Heindorf
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class IMPROVABLE (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="IMPROVABLE-TEST-1">
diff --git a/examples/NOT PASSED/UM58-D-SI-example.xml b/examples/NOT PASSED/UM58-D-SI-example.xml
index cc1ea6d..2b3f384 100644
--- a/examples/NOT PASSED/UM58-D-SI-example.xml	
+++ b/examples/NOT PASSED/UM58-D-SI-example.xml	
@@ -3,8 +3,8 @@
 			
 		Authors: 			Bojan Acko, Rok Klobucar
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
diff --git a/examples/NOT PASSED/UM59-D-SI-example.xml b/examples/NOT PASSED/UM59-D-SI-example.xml
index 6abd4dd..f754902 100644
--- a/examples/NOT PASSED/UM59-D-SI-example.xml	
+++ b/examples/NOT PASSED/UM59-D-SI-example.xml	
@@ -3,8 +3,8 @@
 			
 		Authors: 			Bojan Acko, Rok Klobucar
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-210		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
diff --git a/examples/NOT PASSED/UM60-D-SI-example.xml b/examples/NOT PASSED/UM60-D-SI-example.xml
index cb37d52..6243042 100644
--- a/examples/NOT PASSED/UM60-D-SI-example.xml	
+++ b/examples/NOT PASSED/UM60-D-SI-example.xml	
@@ -3,8 +3,8 @@
 			
 		Authors: 			Bojan Acko, Rok Klobucar
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
diff --git a/examples/PLATINUM/2020-03-20-UM-PLATINUM-examples.xml b/examples/PLATINUM/2020-03-20-UM-PLATINUM-examples.xml
index 2c4c5a9..05f48fd 100644
--- a/examples/PLATINUM/2020-03-20-UM-PLATINUM-examples.xml
+++ b/examples/PLATINUM/2020-03-20-UM-PLATINUM-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
 		Copyright (c) 2019 - 2021 University of Maribour (UM), all rights reserved. 
 			
 		Authors: 			Bojan Acko, Rok Klobucar
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="UM1">
diff --git a/examples/PLATINUM/2021-10-26-PLATINUM-examples-xmllists.xml b/examples/PLATINUM/2021-10-26-PLATINUM-examples-xmllists.xml
index 92fba53..2de64e5 100644
--- a/examples/PLATINUM/2021-10-26-PLATINUM-examples-xmllists.xml
+++ b/examples/PLATINUM/2021-10-26-PLATINUM-examples-xmllists.xml
@@ -4,15 +4,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
     
     <!--
-		Copyright (c) 2022-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2022-2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Justin Jagieniak, Benjamin Glogeer
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -28,7 +28,7 @@
       -->
     
     <siTest:metaData>
-        <siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.0)</siTest:testDescription>
+        <siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.1)</siTest:testDescription>
     </siTest:metaData>
     
     <siTest:testData id="PTB639">
diff --git a/examples/PLATINUM/2022-05-23-PLATINUM-examples.xml b/examples/PLATINUM/2022-05-23-PLATINUM-examples.xml
index 6a5604e..5c42057 100644
--- a/examples/PLATINUM/2022-05-23-PLATINUM-examples.xml
+++ b/examples/PLATINUM/2022-05-23-PLATINUM-examples.xml
@@ -4,15 +4,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
     
     <!--
-		Copyright (c) 2022-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2022-2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Justin Jagieniak, Benjamin Glogeer
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -28,7 +28,7 @@
       -->
     
     <siTest:metaData>
-        <siTest:testDescription>XML examples including quantity type for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.0)</siTest:testDescription>
+        <siTest:testDescription>XML examples including quantity type for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.1)</siTest:testDescription>
     </siTest:metaData>
 
     <siTest:testData id="PTB703">
diff --git a/examples/PLATINUM/2023-03-31-PLATINUM-examples-1.xml b/examples/PLATINUM/2023-03-31-PLATINUM-examples-1.xml
index 9e2f574..457158a 100644
--- a/examples/PLATINUM/2023-03-31-PLATINUM-examples-1.xml
+++ b/examples/PLATINUM/2023-03-31-PLATINUM-examples-1.xml
@@ -2,15 +2,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
     
     <!--
-		Copyright (c) 2018-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2018-2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Wafa El Jaoua, Daniel Hutzschenreuter & autors of predecessor versions
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
diff --git a/examples/PLATINUM/PTB-PLATINUM-examples-2.xml b/examples/PLATINUM/PTB-PLATINUM-examples-2.xml
index 30588ca..77632e8 100644
--- a/examples/PLATINUM/PTB-PLATINUM-examples-2.xml
+++ b/examples/PLATINUM/PTB-PLATINUM-examples-2.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
-		Copyright (c) 2019 - 2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	
diff --git a/examples/PLATINUM/PTB-PLATINUM-examples.xml b/examples/PLATINUM/PTB-PLATINUM-examples.xml
index 2288451..bc41475 100644
--- a/examples/PLATINUM/PTB-PLATINUM-examples.xml
+++ b/examples/PLATINUM/PTB-PLATINUM-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
-		Copyright (c) 2019 - 2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901	10.5281/zenodo.4709001
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="PTB1">
diff --git a/examples/PLATINUM/platinum-test.xml b/examples/PLATINUM/platinum-test.xml
index d3b568a..103dd8c 100644
--- a/examples/PLATINUM/platinum-test.xml
+++ b/examples/PLATINUM/platinum-test.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
 		Copyright (c) 2019 - 2021 Ostfalia HAW, all rights reserved. 
 
 		Authors:	Bernd Müller, Lukas Heindorf
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class PLATINUM (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="PLATINUM-TEST-1">
diff --git a/examples/SI-Accelaration-examples.xml b/examples/SI-Accelaration-examples.xml
index 0960ca0..044d8fe 100644
--- a/examples/SI-Accelaration-examples.xml
+++ b/examples/SI-Accelaration-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 	
 	<!--
-		Copyright (c) 2019 - 2021 Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
+		Copyright (c) 2019 - 2024 Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
diff --git a/examples/SILVER/2020-03-20-UM-SILVER-examples.xml b/examples/SILVER/2020-03-20-UM-SILVER-examples.xml
index acbb975..3a50407 100644
--- a/examples/SILVER/2020-03-20-UM-SILVER-examples.xml
+++ b/examples/SILVER/2020-03-20-UM-SILVER-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
 		Copyright (c) 2019 - 2021 University of Maribour (UM), all rights reserved. 
 			
 		Authors: Bojan Acko, Rok Klobucar
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="UM3">
diff --git a/examples/SILVER/2021-11-22-SILVER-examples-xmllists.xml b/examples/SILVER/2021-11-22-SILVER-examples-xmllists.xml
index ddcbab4..e1f7974 100644
--- a/examples/SILVER/2021-11-22-SILVER-examples-xmllists.xml
+++ b/examples/SILVER/2021-11-22-SILVER-examples-xmllists.xml
@@ -4,15 +4,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
     
     <!--
-		Copyright (c) 2022-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2022-2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Justin Jagieniak, Benjamin Glogeer
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2025-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -28,7 +28,7 @@
       -->
     
     <siTest:metaData>
-        <siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.0)</siTest:testDescription>
+        <siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.1)</siTest:testDescription>
     </siTest:metaData>
     
     <siTest:testData id="PTB648">
diff --git a/examples/SILVER/2022-05-23-SILVER-examples.xml b/examples/SILVER/2022-05-23-SILVER-examples.xml
index 118b90f..23824ff 100644
--- a/examples/SILVER/2022-05-23-SILVER-examples.xml
+++ b/examples/SILVER/2022-05-23-SILVER-examples.xml
@@ -4,15 +4,15 @@
     xmlns:siTest="https://ptb.de/si/examples"
     xmlns:si="https://ptb.de/si"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+    xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
     
     <!--
 		Copyright (c) 2022-2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		AUTHORS: 			Justin Jagieniak, Benjamin Glogeer
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -28,7 +28,7 @@
       -->
     
     <siTest:metaData>
-        <siTest:testDescription>XML examples including quantity type for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.0)</siTest:testDescription>
+        <siTest:testDescription>XML examples including quantity type for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.1)</siTest:testDescription>
     </siTest:metaData>
     
    <siTest:testData id="PTB704">
diff --git a/examples/SILVER/PTB-SILVER-examples-2.xml b/examples/SILVER/PTB-SILVER-examples-2.xml
index ff63e2b..cff799b 100644
--- a/examples/SILVER/PTB-SILVER-examples-2.xml
+++ b/examples/SILVER/PTB-SILVER-examples-2.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
-		Copyright (c) 2019 - 2021  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="PTB533">
diff --git a/examples/SILVER/PTB-SILVER-examples.xml b/examples/SILVER/PTB-SILVER-examples.xml
index 5181b17..9c79180 100644
--- a/examples/SILVER/PTB-SILVER-examples.xml
+++ b/examples/SILVER/PTB-SILVER-examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
-		Copyright (c) 2019 - 2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
+		Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved.  
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21	
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="PTB13">
diff --git a/examples/SILVER/silver-test.xml b/examples/SILVER/silver-test.xml
index 8f794d5..484ce2c 100644
--- a/examples/SILVER/silver-test.xml
+++ b/examples/SILVER/silver-test.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 
 	<!--
 		Copyright (c) 2019 - 2021 Ostfalia HAW, all rights reserved. 
 
 		Authors:			Bernd Müller, Lukas Heindorf
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	2.2.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 
 	<siTest:metaData>
-		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.0)</siTest:testDescription>
+		<siTest:testDescription>XML examples for SmartCom D-SI data with quality class SILVER (D-SI XSD version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	<siTest:testData id="SILVER-TEST-1">
diff --git a/examples/SI_Format_TestData.xsd b/examples/SI_Format_TestData.xsd
index bfbdeca..5567e4c 100644
--- a/examples/SI_Format_TestData.xsd
+++ b/examples/SI_Format_TestData.xsd
@@ -5,13 +5,13 @@
 	xmlns:si="https://ptb.de/si"
 	elementFormDefault="qualified" >
 	
-	<xs:import namespace="https://ptb.de/si" schemaLocation="https://www.ptb.de/si/v2.2.0/SI_Format.xsd"/>
+	<xs:import namespace="https://ptb.de/si" schemaLocation="https://www.ptb.de/si/v2.2.1/SI_Format.xsd"/>
 	
 	<xs:annotation>
 		<xs:documentation xml:lang="en">
 						
 			D-SI test data XSD
-			Copyright (c) 2019 - 2023  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
+			Copyright (c) 2019 - 2024  Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
 				
 			This XML Scheme Definition (XSD) is free software: you can redistribute it and/or modify
    			it under the terms of the GNU Lesser General Public License as published by
@@ -24,8 +24,8 @@
 
 			CONTACT: 			smartcom@ptb.de
 			DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-			D-SI XSD VERSION:	2.2.0
-			RELEASE DATA:		2023-11-30		
+			D-SI XSD VERSION:	2.2.1
+			RELEASE DATA:		2024-06-21		
 			DOI:				10.5281/zenodo.3366901
 
     		You should have received a copy of the GNU Lesser General Public License
diff --git a/examples/SmartCom_A1.2.3_examples.xml b/examples/SmartCom_A1.2.3_examples.xml
index cc13ee6..1c57bea 100644
--- a/examples/SmartCom_A1.2.3_examples.xml
+++ b/examples/SmartCom_A1.2.3_examples.xml
@@ -3,15 +3,15 @@
 	xmlns:siTest="https://ptb.de/si/examples"
 	xmlns:si="https://ptb.de/si"
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.0/examples/SI_Format_TestData.xsd">
+	xsi:schemaLocation="https://ptb.de/si/examples https://www.ptb.de/si/v2.2.1/examples/SI_Format_TestData.xsd">
 	
 	<!--
-		Copyright (c) 2019 - 2023 Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
+		Copyright (c) 2019 - 2024 Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
 			
 		CONTACT: 			smartcom@ptb.de
 		DEVELOPMENT:		https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-		D-SI XSD VERSION:	22.0
-		RELEASE DATA:		2023-11-30		
+		D-SI XSD VERSION:	2.2.1
+		RELEASE DATA:		2024-06-21		
 		DOI:				10.5281/zenodo.3366901
 
 		This XML file is free data: you can redistribute it and/or modify
@@ -27,7 +27,7 @@
       -->
 		
 	<siTest:metaData>
-		<siTest:testDescription>Update XML examples for SmartCom D-SI XML format version 2.2.0.</siTest:testDescription>
+		<siTest:testDescription>Update XML examples for SmartCom D-SI XML format (D-SI Version 2.2.1)</siTest:testDescription>
 	</siTest:metaData>
 	
 	
diff --git a/qudt/quantitykind.xsd b/qudt/quantitykind.xsd
index e9c2e0b..69095f5 100644
--- a/qudt/quantitykind.xsd
+++ b/qudt/quantitykind.xsd
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<xs:schema version="2.2.0" xmlns:xs="http://www.w3.org/2001/XMLSchema"
+<xs:schema version="2.2.1" xmlns:xs="http://www.w3.org/2001/XMLSchema"
     targetNamespace="http://qudt.org/vocab/"
     xmlns:qudt="http://qudt.org/vocab/"
     elementFormDefault="qualified">
@@ -7,7 +7,7 @@
     <xs:annotation>
         <xs:documentation xml:lang="en">
             D-SI - Digital System of Units
-            Copyright (c) 2018 - 2023 Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
+            Copyright (c) 2018 - 2024 Physikalisch-Technische Bundesanstalt (PTB), all rights reserved. 
             
             This XML Scheme Definition (XSD) is free software: you can redistribute it and/or modify
             it under the terms of the GNU Lesser General Public License as published by
@@ -23,8 +23,8 @@
             
             CONTACT:            daniel.hutzschenreuter@ptb.de
             DEVELOPMENT:        https://gitlab1.ptb.de/d-ptb/d-si/xsd-d-si
-            D-SI XSD VERSION:   2.2.0
-            RELEASE DATA:       2023-11-30      
+            D-SI XSD VERSION:   2.2.1
+            RELEASE DATA:       2024-06-21      
             DOI:                10.5281/zenodo.3366901      
         </xs:documentation>
         <xs:documentation xml:lang="en">
-- 
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