How To Fix /IWBEP/CM_CP121 - Entity type '&1': Property '&2' generation failed

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_CP -

• Message number: 121

• Message text: Entity type '&1': Property '&2' generation failed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_CP121 - Entity type '&1': Property '&2' generation failed ?

  The SAP error message /IWBEP/CM_CP121 typically indicates that there is an issue with the generation of a property for an entity type in the context of the SAP Gateway or OData service. This error can occur during the activation or generation of the OData service, and it usually points to a problem with the metadata definition of the entity type or its properties.
  Causes:
  
  Incorrect Data Type: The property may have an incorrect or unsupported data type defined in the entity type.
  Missing Annotations: Required annotations for the property may be missing, which can lead to generation failures.
  Inconsistent Naming: The property name may not conform to naming conventions or may conflict with reserved keywords.
  Model Issues: There may be issues in the underlying data model or database table that the entity type is based on.
  Technical Settings: The technical settings of the entity type or its properties may not be correctly configured.
  
  Solutions:
  
  Check Data Types: Review the data types of the properties in the entity type definition. Ensure they are valid and supported by the OData service.
  Review Annotations: Ensure that all required annotations for the properties are present and correctly defined.
  Naming Conventions: Verify that the property names follow the correct naming conventions and do not conflict with any reserved keywords.
  Model Validation: Validate the underlying data model or database table to ensure there are no inconsistencies or issues.
  Technical Settings: Check the technical settings of the entity type and its properties in the SAP Gateway Service Builder (transaction code SEGW) to ensure they are correctly configured.
  Regenerate the Service: After making the necessary corrections, try to regenerate the OData service and activate it again.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SEGW (Service Builder) to manage OData services and check for issues in the entity definitions.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to this error message.
  Debugging: If the issue persists, consider debugging the service generation process to identify the exact point of failure.
  Community Forums: Check SAP Community forums or other online resources for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify and resolve the cause of the /IWBEP/CM_CP121 error message in your SAP system.