How To Fix /IWBEP/CM_V4S_RUN066 - Application did not set DONE list for an expand node '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4S_RUN -

• Message number: 066

• Message text: Application did not set DONE list for an expand node '&1'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4S_RUN066 - Application did not set DONE list for an expand node '&1' ?

  The SAP error message /IWBEP/CM_V4S_RUN066 Application did not set DONE list for an expand node '&1' typically occurs in the context of OData services when the application logic fails to properly handle the expansion of entities in the response. This error indicates that the application did not provide a "DONE" list for a specific expand node, which is necessary for the OData framework to understand that the processing of that node is complete.
  Cause:
  
  Missing Implementation: The application logic for the specific expand node may not have been implemented correctly. This could be due to missing code that populates the DONE list.
  Incorrect Data Handling: The data retrieval logic may not be correctly handling the relationships between entities, leading to an incomplete response.
  Configuration Issues: There may be configuration issues in the OData service or the underlying data model that prevent the proper expansion of nodes.
  Service Definition Issues: The OData service definition might not correctly define the relationships or navigation properties that are being expanded.
  
  Solution:
  
  Check Implementation: Review the implementation of the OData service, particularly the methods that handle the expand nodes. Ensure that the DONE list is being populated correctly for all expand nodes.
  Debugging: Use debugging tools to trace the execution of the OData service and identify where the DONE list is not being set. Look for any exceptions or errors in the logic that might prevent the list from being populated.
  Review Data Model: Ensure that the data model and relationships are correctly defined. Check that the navigation properties are properly set up in the data model.
  Service Metadata: Check the service metadata (e.g., using the $metadata endpoint) to ensure that the expand nodes are correctly defined and that the relationships are valid.
  Testing: Test the OData service with different expand scenarios to see if the issue is consistent or if it only occurs under certain conditions.
  
  Related Information:
  
  OData Documentation: Review the official SAP OData documentation for guidelines on implementing expand functionality and handling related entities.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide patches related to this error.
  Community Forums: Engage with SAP community forums or support channels to see if other users have encountered similar issues and what solutions they found effective.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.