How To Fix /IWBEP/SBOD442 - Type Kind Core Type cannot have structure '&1' as ABAP Field

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/SBOD -

• Message number: 442

• Message text: Type Kind Core Type cannot have structure '&1' as ABAP Field

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/SBOD442 - Type Kind Core Type cannot have structure '&1' as ABAP Field ?

  The SAP error message /IWBEP/SBOD442 Type Kind Core Type cannot have structure '&1' as ABAP Field typically occurs in the context of SAP Gateway and OData services when there is an issue with the data model definition, particularly when defining the structure of an entity type in an OData service.
  Cause:
  
  Invalid Structure Definition: The error indicates that a structure defined in the ABAP data model is not compatible with the expected type for an OData entity. Specifically, it suggests that a structure is being used where a simple type (like a string, integer, etc.) is expected.
  Incompatible Data Types: The OData service expects certain fields to be of a primitive type, but a structure (which is a complex type) has been defined instead.
  Model Configuration Issues: There may be issues in the way the data model is configured in the SAP Gateway service.
  
  Solution:
  
  Check Data Model: Review the data model in the SAP Gateway Service Builder (transaction code SEGW). Ensure that the fields defined in your entity types are of the correct type. Replace any structures with appropriate primitive types.
  Modify Entity Type: If you need to include complex data, consider defining a new entity type that represents the structure instead of trying to use a structure directly as a field.
  Regenerate the Service: After making changes to the data model, regenerate the OData service to ensure that the changes are reflected in the service definition.
  Check Annotations: Ensure that any annotations or metadata definitions are correctly set up to avoid conflicts with the expected data types.
  Test the Service: After making the necessary changes, test the OData service to ensure that it works as expected without throwing the error.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SEGW (Service Builder) to manage OData services and SE11 (Data Dictionary) to check the definitions of structures and tables.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to this error message.
  Documentation: Refer to the SAP Gateway documentation for best practices on defining entity types and data models.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service is correctly configured.