How To Fix /IWBEP/CM_MGW_RT161 - Type '&1' provided by the app is not a strcuture (Type KIND_STRUCT)

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 161

• Message text: Type '&1' provided by the app is not a strcuture (Type KIND_STRUCT)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT161 - Type '&1' provided by the app is not a strcuture (Type KIND_STRUCT) ?

  The SAP error message /IWBEP/CM_MGW_RT161 indicates that there is an issue with the data type being used in an OData service. Specifically, the error message states that the type provided by the application is not a structure (Type KIND_STRUCT). This typically occurs when the OData service expects a certain data structure but receives a different type, such as a primitive type or an unsupported type.
  Cause:
  
  Incorrect Data Type: The most common cause is that the data type defined in the OData service is not a structure, but rather a primitive type (like string, integer, etc.) or an unsupported type.
  Model Definition Issues: There may be issues in the way the data model is defined in the service. For example, if the entity type is incorrectly defined or if the mapping between the entity and the underlying data source is not set up correctly.
  Service Implementation Errors: Errors in the implementation of the service methods (like GET, POST, etc.) can lead to this issue if the expected data structure is not being returned.
  
  Solution:
  
  Check Data Model: Review the data model definition in the OData service. Ensure that the entity types are correctly defined as structures and that they match the expected format.
  Review Service Implementation: Check the implementation of the OData service methods. Ensure that the methods return the correct data types as defined in the service metadata.
  Update Metadata: If changes have been made to the data model or service implementation, ensure that the service metadata is updated. You can do this by regenerating the service or refreshing the metadata in the client application.
  Debugging: Use debugging tools to trace the execution of the OData service and identify where the incorrect type is being returned. This can help pinpoint the exact location of the issue.
  Check Annotations: Ensure that any annotations in the service definition are correctly applied and that they do not conflict with the expected data types.
  
  Related Information:
  
  OData Service Metadata: You can access the service metadata by appending $metadata to the service URL. This will provide you with the structure of the data types defined in the service.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWBEP/CM_MGW_RT161 error message in your SAP OData service.