How To Fix /IWFND/MED030 - Annotation key '&1' is not defined for namespace '&2' and was not saved

/IWFND/MED030 - Overview

• Message type: E = Error

• Message class: /IWFND/MED -

• Message number: 030

• Message text: Annotation key '&1' is not defined for namespace '&2' and was not saved

Self-Explanatory Message

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/IWFND/MED030 - Details

• The SAP error message /IWFND/MED030 Annotation key '&1' is not defined for namespace '&2' and was not saved typically occurs in the context of SAP Gateway and OData services when there is an issue with the annotations defined for an OData service. This error indicates that the system is unable to find a specific annotation key in the specified namespace, which prevents the saving of the related metadata.
  
  Cause:
  
  Missing Annotation Definition: The annotation key specified in the error message is not defined in the corresponding annotation file or service.
  Incorrect Namespace: The namespace provided in the error message does not match the namespace where the annotation is defined.
  Typographical Errors: There may be a typo in the annotation key or namespace.
  Transport Issues: If the annotations were recently transported from another system, they may not have been properly imported or activated.
  
  
  Solution:
  
  
  Check Annotation Definitions:
  
  Verify that the annotation key (&1) is correctly defined in the relevant