How To Fix /IWBEP/CM_V4_MED190 - Invalid internal name '&1'; prefix 'SAP__' is reserved

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 190

• Message text: Invalid internal name '&1'; prefix 'SAP__' is reserved

Self-Explanatory Message

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• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED190 - Invalid internal name '&1'; prefix 'SAP__' is reserved ?

  The SAP error message /IWBEP/CM_V4_MED190 Invalid internal name '&1'; prefix 'SAP__' is reserved typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an issue with the naming convention of an internal name used in your OData service or model. Specifically, it points out that the prefix SAP__ is reserved for internal SAP use, and therefore, cannot be used for custom or user-defined names.
  Cause:
  
  Invalid Naming Convention: The internal name you are trying to use starts with the reserved prefix SAP__. This prefix is reserved for SAP's internal use and cannot be used in custom implementations.
  Model Definition Issues: If you are defining entities, properties, or other elements in your OData model, and you inadvertently use a name that starts with SAP__, this error will be triggered.
  Code Generation: If you are generating code or metadata for your OData service, the generation process might be attempting to use a reserved name.
  
  Solution:
  
  Rename the Internal Name: Change the internal name that is causing the error to something that does not start with SAP__. Ensure that your naming convention adheres to the guidelines provided by SAP.
  Check OData Model Definitions: Review your OData model definitions (entities, properties, etc.) to ensure that none of them use the reserved prefix.
  Regenerate Metadata: If you have made changes to the names, regenerate the metadata for your OData service to ensure that the changes are reflected.
  Review Code: If you are using custom code or extensions, check for any hardcoded names that might be using the reserved prefix and update them accordingly.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for guidelines on naming conventions in OData services.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other developers who may have encountered similar issues.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service functions correctly without using reserved naming conventions.