How To Fix /IWBEP/CM_MGW_RT164 - Name for complex type '&1' was not provided

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 164

• Message text: Name for complex type '&1' was not provided

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT164 - Name for complex type '&1' was not provided ?

  The SAP error message /IWBEP/CM_MGW_RT164 indicates that there is an issue with the definition of a complex type in your OData service. Specifically, the error message states that the name for a complex type is not provided, which is necessary for the OData service to function correctly.
  Cause:
  
  Missing Name for Complex Type: The error typically arises when a complex type is defined in the OData service but does not have a name assigned to it. This can happen if the metadata for the OData service is not correctly defined or if there is a misconfiguration in the service definition.
  Incorrect Annotations: If the annotations for the complex type are not properly set, it may lead to this error.
  Model Issues: There may be issues in the underlying data model or the way the service is generated.
  
  Solution:
  
  
  Check the Complex Type Definition:
  
  Go to the OData service definition in the SAP Gateway Service Builder (transaction code SEGW).
  Locate the complex type that is causing the issue and ensure that it has a valid name assigned to it.
  
  
  
  Review Metadata:
  
  Check the metadata of the OData service to ensure that all complex types are correctly defined and named.
  You can access the metadata by appending $metadata to the OData service URL.
  
  
  
  Regenerate the Service:
  
  If you have made changes to the complex type or its annotations, regenerate the service to ensure that the changes are reflected.
  Use the "Generate Runtime Objects" option in the Service Builder.
  
  
  
  Check Annotations:
  
  Ensure that all necessary annotations for the complex type are correctly defined. This includes checking for any missing or incorrect annotations that could lead to the error.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the OData service to trace where the error is occurring. This may provide more insight into what is causing the complex type to be unnamed.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or community forums for additional guidance on complex type definitions and OData service configurations.
  
  
  
  Related Information:
  
  Transaction Codes: SEGW (Service Builder), SE80 (Object Navigator)
  OData Services: Understanding how to define and manage OData services in SAP Gateway.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional solutions related to this error.
  
  By following these steps, you should be able to resolve the error message /IWBEP/CM_MGW_RT164 and ensure that your OData service is functioning correctly.