In order to communicate an allowed values defined by DDEX later than the message format used in the communication between two business partners the following approach shall be taken:
- The element shall contain the value “UserDefined”;
- The UserDefinedValue attribute shall be set to the value from the later standard; and
- The Namespace attribute shall be set to the same value as defined as normative content for the MessageVersionId attribute for that standard.
For example, to communicate a UseType of KioskDownload, a term defined for Version 3.3 of the Release Notification Standard in a Version 3.2 message the following XML code shall be used: