How To Fix /IWBEP/CM_MED037 - Binding conversions not allowed for non-DDIC structure &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MED -

• Message number: 037

• Message text: Binding conversions not allowed for non-DDIC structure &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MED037 - Binding conversions not allowed for non-DDIC structure &1 ?

  The SAP error message /IWBEP/CM_MED037 Binding conversions not allowed for non-DDIC structure &1 typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an issue with the data binding of a non-DDIC (non-Data Dictionary) structure in your OData service.
  Cause:
  
  Non-DDIC Structure: The error arises when you are trying to bind a non-DDIC structure to an OData service. Non-DDIC structures are those that are not defined in the Data Dictionary (DDIC) of SAP. OData services expect data to be in a format that can be mapped to DDIC structures.
  Incorrect Model Definition: If the OData model is incorrectly defined or if there are issues with the metadata, it can lead to this error.
  Incompatible Data Types: The data types in the non-DDIC structure may not be compatible with the expected types in the OData service.
  
  Solution:
  
  Use DDIC Structures: If possible, modify your implementation to use DDIC structures instead of non-DDIC structures. This is the most straightforward solution.
  Check OData Model: Review the OData model definition in your service. Ensure that all entities and types are correctly defined and that they correspond to DDIC structures.
  Adjust Data Binding: If you must use a non-DDIC structure, consider creating a wrapper DDIC structure that can hold the data from the non-DDIC structure and use that in your OData service.
  Review Metadata: Ensure that the metadata of your OData service is correctly generated and reflects the current state of your data model.
  Debugging: Use transaction /IWFND/ERROR_LOG to check for additional error messages that might provide more context about the issue.
  
  Related Information:
  
  SAP Gateway: Familiarize yourself with the SAP Gateway framework, as it is responsible for exposing OData services.
  OData Services: Understand how OData services work, including the importance of metadata and data types.
  Data Dictionary (DDIC): Learn about the SAP Data Dictionary and how it defines data structures, tables, and types within the SAP system.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support or consulting the SAP community for further assistance.