How To Fix /IWBEP/CM_MGW_RT140 - No complex type found for complex type property '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 140

• Message text: No complex type found for complex type property '&1'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT140 - No complex type found for complex type property '&1' ?

  The SAP error message /IWBEP/CM_MGW_RT140 No complex type found for complex type property '&1' typically occurs in the context of SAP Gateway and OData services. This error indicates that the system is unable to find a complex type definition for a property that is expected to be a complex type in the OData model.
  Cause:
  
  
  Missing Complex Type Definition: The most common cause of this error is that the complex type referenced in the OData service is not defined in the data model. This could happen if the complex type was not created or was deleted.
  
  
  Incorrect Metadata: If the metadata of the OData service is not correctly generated or updated, it may lead to this error. This can happen if there are changes in the underlying data model that are not reflected in the OData service.
  
  
  Model Binding Issues: There may be issues with how the model is bound to the OData service, leading to the inability to resolve the complex type.
  
  
  Typographical Errors: There could be a typo in the name of the complex type in the service definition.
  
  
  Solution:
  
  
  Check Complex Type Definition: Verify that the complex type referenced in the error message is defined in the data model. You can do this by checking the Data Model in the SAP Gateway Service Builder (transaction code SEGW).
  
  
  Regenerate the OData Service: If the complex type is defined but the error persists, try regenerating the OData service. This can be done by:
  
  Right-clicking on the service in the Service Builder and selecting "Generate".
  Ensure that the metadata is updated.
  
  
  
  Check Metadata: Use the OData service's metadata URL (usually something like /sap/opu/odata/sap/<service_name>/$metadata) to check if the complex type is correctly defined in the metadata.
  
  
  Review Model Binding: Ensure that the model is correctly bound to the OData service and that all necessary associations and navigation properties are correctly defined.
  
  
  Debugging: If the issue persists, consider debugging the service to trace where the error occurs. This can provide insights into what might be going wrong.
  
  
  Consult Documentation: Review SAP documentation or community forums for any known issues or additional troubleshooting steps related to this error.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SEGW: Service Builder for OData services.
  SE80: Object Navigator, where you can check the definitions of complex types.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  
  
  Community Forums: SAP Community and other forums can be helpful for finding similar issues faced by other developers.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the error message /IWBEP/CM_MGW_RT140.