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

Last modified by Helena K. on 2026/06/08 15:19

From 8.1 to 9.1 From 9.6 to 9.7

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edited by Artur K.
on 2025/11/05 14:26

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To version 9.6

edited by Helena K.
on 2026/06/03 14:31

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  = 1. Overview =
--[[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] 3.1 is a minor revision to the [[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] 3.0 Standard which introduces a limited set of changes, which cover the following:
++[[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.1 is a minor revision to the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.0 Standard which introduces a limited set of changes, which cover the following:
++
  **Information Model**
--* Support for [[Dataflows>>doc:Glossary.Dataflow.WebHome]] to reference a subset of [[Dimensions>>doc:Glossary.Dimension.WebHome]] from a [[Data Structure Definition>>doc:Glossary.Data structure definition.WebHome]]
--* Simplification to Data (% style="color:#e74c3c" %)[[Constraints>>doc:Glossary.Constraint.WebHome]]
--* Addition of Availability (% style="color:#e74c3c" %)[[Constraints>>doc:Glossary.Constraint.WebHome]]
++* Support for [[Dataflows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] to reference a subset of [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] from a [[Data Structure Definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]
++* Simplification to Data [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]
++* Addition of Availability [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]
  **Documentation**
--Registering [[Reference Metadata>>doc:Glossary.Reference metadata.WebHome]] removed from documentation, to align with XML Registration object which is unable to reference a Metadata Provision, and REST API which is unable to query for registered [[reference metadata>>doc:Glossary.Reference metadata.WebHome]] sources.
++Registering [[Reference Metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] removed from documentation, to align with XML Registration object which is unable to reference a Metadata Provision, and REST API which is unable to query for registered [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] sources.
  **Breaking Changes**
--* Remove (% style="color:#e74c3c" %)[[version>>doc:Glossary.Version.WebHome]](%%) property on Categorisation
--* Removal of Advanced [[Release Calendar>>doc:Glossary.Release policy - release calendar.WebHome]]
++* Remove [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] property on [[Categorisation>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]]
++* Removal of Advanced [[Release Calendar>>doc:sdmx:Glossary 2\.1.Release policy - release calendar.WebHome]]
  **Content of the Document**
--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:
++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:
  Section 2 – Information Model
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  Section 6 – Technical Notes
--[[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] TWG GitHub for the REST API and the XML and JSON formats
++[[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] TWG GitHub for the REST API and the XML and JSON formats
  = 2. Summary of Breaking Changes in 3.1 =
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  == 2.1 Removal of Advanced Release Calendar ==
--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.
++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.
  //Guidance for Implementors//
--[[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]].
++[[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]].
  == 2.2 Removal of Version on Categorisation ==
--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.
++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.
  //Guidance for Implementors//
--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.
++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.
  = 3. Information Model =