/IWFND/CM_MGW_RT102 - Complex type '&1' not found

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 102

• Message text: Complex type '&1' not found

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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AnswerBot

• What is the cause and solution for SAP error message /IWFND/CM_MGW_RT102 - Complex type '&1' not found ?

  The SAP error message /IWFND/CM_MGW_RT102 Complex type '&1' not found typically occurs in the context of SAP Gateway services when the system is unable to locate a specified complex type in the OData service definition. This can happen for several reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  Missing Complex Type Definition: The complex type referenced in the error message is not defined in the Data Model of the OData service.
  Incorrect Service Registration: The OData service may not be properly registered or activated in the SAP Gateway.
  Namespace Issues: There may be a mismatch in the namespace used in the service definition and the one expected by the system.
  Transport Issues: If the service was transported from one system to another, the complex type may not have been included in the transport request.
  Model Changes: Changes made to the data model (like renaming or deleting complex types) without proper adjustments in the service definition can lead to this error.
  
  Solutions:
  
  
  Check Complex Type Definition:
  
  Go to the Service Builder (transaction code SEGW) and verify that the complex type is defined correctly in the data model.
  If it is missing, you may need to create it or adjust the existing model.
  
  
  
  Rebuild the Service:
  
  If the complex type is defined but still not recognized, try to regenerate the service. In the Service Builder, right-click on the service and select "Generate" to regenerate the runtime artifacts.
  
  
  
  Check Service Registration:
  
  Ensure that the OData service is properly registered in the SAP Gateway. You can check this using transaction code /IWFND/MAINT_SERVICE.
  If the service is not listed, you may need to register it.
  
  
  
  Check for Namespace Issues:
  
  Ensure that the namespace used in the service definition matches the one expected by the system. This can be checked in the service metadata.
  
  
  
  Transport Request:
  
  If the service was transported, ensure that all necessary objects, including the complex types, were included in the transport request.
  
  
  
  Clear Cache:
  
  Sometimes, clearing the cache can resolve issues related to outdated metadata. You can do this using transaction code /IWFND/CACHE and selecting the appropriate options to clear the cache.
  
  
  
  Check for Model Changes:
  
  If there have been recent changes to the data model, ensure that all references to complex types are updated accordingly.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SEGW: Service Builder for OData services.
  /IWFND/MAINT_SERVICE: Manage OData services.
  /IWFND/CACHE: Clear the OData service cache.
  
  
  
  Documentation: Refer to SAP Help documentation for OData services and SAP Gateway for more detailed information on complex types and service definitions.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to this error message.
  
  
  By following these steps, you should be able to identify and resolve the issue related to the error message /IWFND/CM_MGW_RT102 Complex type '&1' not found.