How To Fix /IWBEP/CM_V4_MED168 - Conversion class '&1' already set: property '&2' of complex type '&3'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 168

• Message text: Conversion class '&1' already set: property '&2' of complex type '&3'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED168 - Conversion class '&1' already set: property '&2' of complex type '&3' ?

  The SAP error message /IWBEP/CM_V4_MED168 indicates that there is an issue with the conversion class in the context of OData services, specifically when dealing with complex types. The message states that a conversion class has already been set for a specific property of a complex type, which can lead to conflicts or unexpected behavior.
  Cause:
  This error typically occurs in the following scenarios:
  
  Duplicate Configuration: The conversion class for a property of a complex type has been defined multiple times, leading to a conflict.
  Incorrect Mapping: There may be an issue with how the properties of the complex type are mapped to the conversion classes in the OData service.
  Model Changes: If the data model has been changed (e.g., adding or modifying complex types) without properly updating the associated conversion classes, this error can arise.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Configuration:
  
  Review the configuration of the OData service and ensure that each property of the complex type has a unique conversion class assigned.
  Navigate to the relevant data model and check the properties of the complex type to ensure that no duplicate conversion classes are defined.
  
  
  
  Update the Model:
  
  If you have made changes to the data model, ensure that you regenerate the OData service and update the associated conversion classes accordingly.
  Use transaction code /IWFND/MAINT_SERVICE to manage and maintain your OData services.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the OData service to trace where the conversion class is being set and identify any conflicting assignments.
  Use transaction code SE80 or SE11 to analyze the data model and conversion classes.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or community forums for any specific notes or updates related to the version of SAP you are using, as there may be known issues or patches available.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance, providing them with the error details and any relevant configuration information.
  
  
  
  Related Information:
  
  OData Services: Understanding how OData services work in SAP and the role of conversion classes in mapping data types.
  Complex Types: Familiarity with complex types in the context of SAP data models and how they are defined and used in OData services.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for configuring OData services.
  
  By following these steps, you should be able to identify and resolve the issue causing the error message /IWBEP/CM_V4_MED168.