Message type: E = Error
Message class:  /IWBEP/MC_SB_APC -  
Message number: 002
Message text: Annotation Model already exists
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The SAP error message /IWBEP/MC_SB_APC002 Annotation Model already exists typically occurs in the context of SAP Gateway and OData services when there is an attempt to create or register an annotation model that already exists in the system. This can happen during the development or deployment of OData services, particularly when working with annotations for UI5 applications.
Cause: Duplicate Annotation Model: The error indicates that an annotation model with the same name or identifier has already been created in the system. Incorrect Configuration: There may be a misconfiguration in the service registration or in the way the annotation model is defined. Development Environment Issues: If you are working in a development environment, it is possible that the model was created in a previous session and not properly deleted or updated.
Solution: Check Existing Models: Use transaction code /IWFND/MAINT_SERVICE to check the list of registered OData services and their associated annotation models. Look for the model that
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