How To Fix /IWFND/CM_CONSUMER020 - Init mapper for complex service - inbound post BAdI mapping

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_CONSUMER -

• Message number: 020

• Message text: Init mapper for complex service - inbound post BAdI mapping

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_CONSUMER020 - Init mapper for complex service - inbound post BAdI mapping ?

  The SAP error message /IWFND/CM_CONSUMER020 typically occurs in the context of SAP Gateway and OData services when there is an issue with the mapping of the inbound request to the corresponding data model. This error is often related to the Business Add-In (BAdI) implementation for mapping complex types in the OData service.
  Cause:
  
  
  BAdI Implementation Issues: The error may arise if the BAdI implementation for the inbound mapping is either not activated or incorrectly implemented. The BAdI is responsible for mapping the incoming data to the appropriate structure in the backend.
  
  
  Data Structure Mismatch: If the incoming data structure does not match the expected structure defined in the OData service, this can lead to mapping errors.
  
  
  Service Configuration: Incorrect configuration of the OData service or the associated data model can also lead to this error.
  
  
  Missing or Incorrect Annotations: If the OData service lacks the necessary annotations for complex types, it may fail to initialize the mapper correctly.
  
  
  Solution:
  
  
  Check BAdI Implementation:
  
  Go to transaction SE18 (BAdI Definition) and check the implementation of the BAdI related to the OData service.
  Ensure that the BAdI is activated and that the implementation is correctly handling the mapping logic.
  
  
  
  Review Data Model:
  
  Verify that the data model used in the OData service matches the structure of the incoming request. Check for any discrepancies in field names, types, or required fields.
  
  
  
  Service Configuration:
  
  Use transaction IWFND/MAINT_SERVICE to check the configuration of the OData service. Ensure that the service is properly registered and that all necessary settings are in place.
  
  
  
  Check Annotations:
  
  Review the annotations in the service definition to ensure that all complex types are correctly defined and that the necessary metadata is available.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the OData service to trace the execution flow and identify where the mapping fails. You can set breakpoints in the BAdI implementation to see how the data is being processed.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or community forums for any specific notes or updates related to the error message and the BAdI you are working with.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE18: BAdI Definition
  SE19: BAdI Implementation
  IWFND/MAINT_SERVICE: OData Service Maintenance
  IWFND/ERROR_LOG: Error Log for OData Services
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on this error.
  
  
  Community Forums: Engage with SAP Community or other forums where similar issues may have been discussed, as other users may have encountered and resolved the same error.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWFND/CM_CONSUMER020 error in your SAP system.