How To Fix /IWBEP/CM_V4_MED289 - File name property for stream prop. '&1' in entity type '&2' not set

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 289

• Message text: File name property for stream prop. '&1' in entity type '&2' not set

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED289 - File name property for stream prop. '&1' in entity type '&2' not set ?

  The SAP error message /IWBEP/CM_V4_MED289 indicates that there is an issue with the configuration of an OData service, specifically related to the handling of media entities. This error typically arises when the file name property for a stream (binary data) in an entity type is not properly set.
  Cause:
  
  Missing File Name Property: The error suggests that the entity type defined in your OData service is expected to have a file name property for a media stream, but it has not been defined or is not correctly configured.
  Incorrect Metadata Configuration: The metadata for the OData service may not include the necessary properties for handling media streams.
  Model Definition Issues: There may be issues in the way the entity type is defined in the data model, particularly regarding the media type and its associated properties.
  
  Solution:
  
  
  Check Entity Type Definition:
  
  Ensure that the entity type in your OData service has a property defined for the file name. This property is typically of type Edm.String and should be marked as a media type property.
  Example: If your entity type is MyEntity, ensure it has a property like FileName defined.
  
  
  
  Update Metadata:
  
  If you have made changes to the entity type, regenerate the metadata for the OData service to ensure that the changes are reflected.
  You can do this by using transaction code /IWFND/MAINT_SERVICE to maintain your OData service and refresh the metadata.
  
  
  
  Check Service Implementation:
  
  Review the implementation of the OData service to ensure that the file name property is being set correctly when handling media streams.
  Ensure that the logic for uploading or downloading media files correctly populates the file name property.
  
  
  
  Test the OData Service:
  
  After making the necessary changes, test the OData service using tools like Postman or the SAP Gateway Client to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  OData Services: Understanding how OData services work in SAP, especially regarding media entities and streams, is crucial. Refer to the SAP Gateway documentation for more details on media handling.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on configuring media entities.
  Debugging: If the issue persists, consider debugging the OData service to trace where the file name property is expected but not set.
  
  By following these steps, you should be able to resolve the error message /IWBEP/CM_V4_MED289 and ensure that your OData service is correctly configured to handle media streams.