How To Fix /IWBEP/CM_V4_MED226 - Parameter type of parameter '&1' already set

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 226

• Message text: Parameter type of parameter '&1' already set

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED226 - Parameter type of parameter '&1' already set ?

  The SAP error message /IWBEP/CM_V4_MED226 Parameter type of parameter '&1' already set typically occurs in the context of OData services when there is a conflict in the parameter definitions of an OData service operation. This error indicates that a parameter has been defined multiple times with different types, which is not allowed.
  Cause:
  
  Duplicate Parameter Definitions: The error is often caused by defining the same parameter more than once in the service implementation or in the service metadata.
  Inconsistent Parameter Types: If a parameter is defined with different types in different places (e.g., in the service definition and in the implementation), it can lead to this error.
  Service Metadata Issues: Sometimes, issues in the service metadata can cause this error, especially if the service has been modified but the metadata has not been updated accordingly.
  
  Solution:
  
  Check Parameter Definitions: Review the parameter definitions in your OData service implementation. Ensure that each parameter is defined only once and that there are no duplicates.
  Consistent Data Types: Make sure that the data types of the parameters are consistent across the service definition and implementation. If a parameter is defined as a string in one place, it should not be defined as an integer in another.
  Update Service Metadata: If you have made changes to the service, ensure that you regenerate or update the service metadata. This can often resolve inconsistencies that lead to this error.
  Check Annotations: If you are using annotations, ensure that they are correctly applied and do not conflict with the parameter definitions.
  Debugging: If the issue persists, consider debugging the service to trace where the parameter is being set and identify any conflicting definitions.
  
  Related Information:
  
  OData Services: Understanding how OData services work in SAP can help in troubleshooting such issues. Familiarize yourself with the OData service model, including entity types, entity sets, and operations.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  SAP Community: Engaging with the SAP Community can provide insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the /IWBEP/CM_V4_MED226 error in your SAP OData service.