Changes for page SDMX 3.1 Standards. Section 1. Summary of Major Changes and New Functionality

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29	29	* Remove [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] property on [[Categorisation>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]]
30	30	* Removal of Advanced [[Release Calendar>>doc:sdmx:Glossary 2\.1.Release policy - release calendar.WebHome]]
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	32	+*
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32	32	**Content of the Document**
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34		-The remainder of this document contains a summary of the changes. More detailed information can be found in the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.1 Technical Specifications, in particular:
	36	+The remainder of this document contains a summary of the changes. More detailed information can be found in the [[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] 3.1 Technical Specifications, in particular:
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36	36	Section 2 – Information Model
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40	40	Section 6 – Technical Notes
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42		-[[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] TWG GitHub for the REST API and the XML and JSON formats
	44	+[[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] TWG GitHub for the REST API and the XML and JSON formats
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44	44	= 2. Summary of Breaking Changes in 3.1 =
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48	48	== 2.1 Removal of Advanced Release Calendar ==
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50		-The Data [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] was simplified to become a cohesive structural [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]] focussed solely on the restriction of values that can be reported. As part of this remodelling the Advanced [[Release Calendar>>doc:sdmx:Glossary 2\.1.Release policy - release calendar.WebHome]] was removed as it does not play a restrictive role.
	52	+The Data (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) was simplified to become a cohesive structural [[artefact>>doc:Glossary.Artefact.WebHome]] focussed solely on the restriction of values that can be reported. As part of this remodelling the Advanced [[Release Calendar>>doc:Glossary.Release policy - release calendar.WebHome]] was removed as it does not play a restrictive role.
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52	52	//Guidance for Implementors//
53		-[[Reference Metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] reported against a [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] and / or [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] can be used as an alternative to the Advanced [[Release Calendar>>doc:sdmx:Glossary 2\.1.Release policy - release calendar.WebHome]].
	55	+[[Reference Metadata>>doc:Glossary.Reference metadata.WebHome]] reported against a [[Dataflow>>doc:Glossary.Dataflow.WebHome]] and / or [[Provision Agreement>>doc:Glossary.Provision agreement.WebHome]] can be used as an alternative to the Advanced [[Release Calendar>>doc:Glossary.Release policy - release calendar.WebHome]].
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55	55	== 2.2 Removal of Version on Categorisation ==
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57		-The [[Categorisation>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]] structural [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]] has no use case for undergoing [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] changes, the [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] was therefore removed.
	59	+The Categorisation structural [[artefact>>doc:Glossary.Artefact.WebHome]] has no use case for undergoing (% style="color:#e74c3c" %)[[version>>doc:Glossary.Version.WebHome]](%%) changes, the (% style="color:#e74c3c" %)[[version>>doc:Glossary.Version.WebHome]](%%) was therefore removed.
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59	59	//Guidance for Implementors//
60		-If multiple [[versions>>doc:sdmx:Glossary 2\.1.Version.WebHome]] of a [[Categorisation>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]] exist where the source or target differs, these [[Categorisations>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]] should be given a unique ID.
	62	+If multiple (% style="color:#e74c3c" %)[[versions>>doc:Glossary.Version.WebHome]](%%) of a Categorisation exist where the source or target differs, these Categorisations should be given a unique ID.
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62	62	= 3. Information Model =
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64	64	The changes to the information model support two distinct use cases:
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66		-1. Horizontally complex [[Data Structure Definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] (DSDs)
67		-1. Additional cohesion to the Data [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] model
	68	+1. Horizontally complex [[Data Structure Definitions>>doc:Glossary.Data structure definition.WebHome]] (DSDs)
	69	+1. Additional cohesion to the Data (% style="color:#e74c3c" %)[[Constraints>>doc:Glossary.Constraint.WebHome]](%%) model
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69	69	These changes are described in below.
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