How To Fix /IWBEP/CM_V4_MED170 - Conversion class '&1' already set: property '&2' of entity type '&3'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 170

• Message text: Conversion class '&1' already set: property '&2' of entity 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_MED170 - Conversion class '&1' already set: property '&2' of entity type '&3' ?

  The SAP error message /IWBEP/CM_V4_MED170 indicates that there is an issue with the conversion class in the context of an OData service. Specifically, the error message states that a conversion class has already been set for a particular property of an entity type, which can lead to conflicts or unexpected behavior in the OData service.
  Cause:
  The error typically arises due to one of the following reasons:
  
  Duplicate Configuration: The conversion class for a specific property of an entity type has been defined multiple times, leading to a conflict.
  Incorrect Mapping: There may be an incorrect mapping in the OData service configuration, where the same property is being assigned different conversion classes.
  Model Changes: Changes made to the data model or entity types without proper adjustments in the OData service configuration can also lead to this error.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check the OData Service Configuration:
  
  Go to the OData service configuration in the SAP Gateway (transaction code /IWFND/MAINT_SERVICE).
  Review the entity types and their properties to ensure that each property has a unique conversion class assigned.
  
  
  
  Review the Conversion Class:
  
  Check the implementation of the conversion class for the specified property. Ensure that it is not being set multiple times for the same entity type.
  If necessary, modify the conversion class to handle the property correctly.
  
  
  
  Adjust the Data Model:
  
  If there have been recent changes to the data model, ensure that the OData service is updated accordingly. This may involve regenerating the service or adjusting the mappings.
  
  
  
  Regenerate the OData Service:
  
  If you have made changes to the entity types or properties, consider regenerating the OData service to ensure that all configurations are up to date.
  
  
  
  Check for Custom Implementations:
  
  If you have custom implementations or extensions, review them to ensure they are not causing conflicts with the conversion classes.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /IWFND/MAINT_SERVICE for service maintenance and /IWBEP/REG_SERVICE for registering services.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error.
  Documentation: Review the SAP Gateway documentation for best practices on configuring OData services and handling conversion classes.
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWBEP/CM_V4_MED170 error message.