/IWFND/MED185 - Binding conversions not allowed for non-DDIC structure &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/MED -

• Message number: 185

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

Self-Explanatory Message

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AnswerBot

• What is the cause and solution for SAP error message /IWFND/MED185 - Binding conversions not allowed for non-DDIC structure &1 ?

  The SAP error message /IWFND/MED185 Binding conversions not allowed for non-DDIC structure &1 typically occurs in the context of SAP Gateway and OData services when there is an issue with the data model or the way data is being handled in the service.
  Cause:
  
  
  Non-DDIC Structure: The error indicates that the OData service is trying to bind a non-DDIC (Data Dictionary) structure. In SAP, DDIC structures are defined in the Data Dictionary and are recognized by the system for data binding. Non-DDIC structures are typically custom structures or types that are not defined in the Data Dictionary.
  
  
  Incompatible Data Types: The error may also arise if there are incompatible data types being used in the OData service, which cannot be converted or mapped correctly.
  
  
  Service Definition Issues: There might be issues in the service definition or the way the entity types are defined in the OData service.
  
  
  Solution:
  
  
  Use DDIC Structures: Ensure that the structures you are using in your OData service are defined in the Data Dictionary (DDIC). If you are using custom structures, consider creating a corresponding DDIC structure.
  
  
  Check Entity Types: Review the entity types and their properties in the OData service definition. Make sure that all properties are correctly defined and that they correspond to DDIC types.
  
  
  Modify the Service: If you are using a non-DDIC structure intentionally, you may need to modify the service to handle the data differently, possibly by creating a wrapper or a mapping layer that converts the non-DDIC structure to a DDIC structure.
  
  
  Debugging: Use transaction /IWFND/ERROR_LOG to check for additional error details and logs that can provide more context on the issue.
  
  
  Re-generate the Service: If changes have been made to the underlying structures or data models, consider re-generating the OData service to ensure that it reflects the latest definitions.
  
  
  Consult Documentation: Review SAP documentation or community forums for any specific guidelines related to the use of non-DDIC structures in OData services.
  
  
  Related Information:
  
  SAP Gateway: Understand the role of SAP Gateway in exposing business data as OData services.
  Data Dictionary (DDIC): Familiarize yourself with how DDIC structures are created and managed in SAP.
  OData Services: Learn about the principles of OData services, including entity types, properties, and data binding.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific implementation.