How To Fix /IWBEP/CM_V4_MED353 - Cplx. Coll. Property '&1' within a Cplx Coll Property '&2' not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 353

• Message text: Cplx. Coll. Property '&1' within a Cplx Coll Property '&2' not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED353 - Cplx. Coll. Property '&1' within a Cplx Coll Property '&2' not supported ?

  The SAP error message /IWBEP/CM_V4_MED353 typically occurs in the context of SAP Gateway and OData services. This error indicates that there is a complex collection property that is not supported in the context of the OData service you are trying to use. Specifically, it points to a complex collection property (&1) that is nested within another complex collection property (&2).
  Cause:
  
  Unsupported Structure: The OData service may not support the specific structure of complex collection properties. This can happen if the service is not designed to handle nested complex types or collections.
  Model Definition Issues: There may be issues in the way the data model is defined in the service. If the metadata does not correctly define the relationships or types, it can lead to this error.
  Version Compatibility: The version of the SAP Gateway or the OData service may not support certain features or structures that you are trying to use.
  
  Solution:
  
  Check Metadata: Review the OData service metadata to ensure that the complex collection properties are defined correctly. You can access the metadata by appending $metadata to the service URL.
  Adjust Data Model: If you have control over the OData service, consider adjusting the data model to either flatten the structure or ensure that the complex collection properties are supported.
  Service Implementation: If you are implementing the service, ensure that the service implementation correctly handles the complex types and collections. You may need to modify the service logic to accommodate the data structure.
  Update SAP Gateway: Ensure that your SAP Gateway is up to date. Sometimes, newer versions include support for additional features or structures.
  Consult Documentation: Refer to the SAP documentation for OData services and complex types to understand the limitations and supported structures.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide guidance on handling complex collections in OData services.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues. They may provide insights or solutions based on their experiences.
  Debugging: If you have access to the backend, consider debugging the service to see how the data is being processed and where the error is being triggered.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.