Versions

Message version

The message version is found in the namespace specification of the XML file. The message version is updated when messages are changed in a way that no longer guarantees retroactive compatibility with the previous message version. These changes include:

• Removing or changing enumeration values

• Changing the names of elements, types or attributes

• Changing the structure or order of a message

• Removing or adding compulsory elements or attributes

• Making elements or attributes compulsory

Message sub-version

Message specifications can be updated with a sub-version without a version update if the retroactive compatibility of messages is preserved. These changes are documented in the XML schema specification using the xsd version attribute in the schema file (.xsd).

• Adding enumeration values

• Non-compulsory message extensions