How To Fix /IWBEP/CM_MGW_RT120 - Data type not found '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 120

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

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT120 - Data type not found '&1' ?

  The SAP error message /IWBEP/CM_MGW_RT120 Data type not found '&1' typically occurs in the context of SAP Gateway and OData services. This error indicates that the system is unable to find a specified data type that is referenced in your OData service or model.
  Cause:
  
  Missing Data Type Definition: The data type that is being referenced in your OData service is not defined in the system.
  Incorrect Model Configuration: There may be an issue with the way the OData model is configured, leading to the system not being able to resolve the data type.
  Transport Issues: If the OData service or its associated data types were transported from one system to another, there may have been an issue during the transport process.
  Namespace Issues: The data type might be defined in a different namespace that is not being recognized in the current context.
  
  Solution:
  
  
  Check Data Type Definition: 
  
  Go to the Data Dictionary (transaction SE11) and check if the data type exists. If it does not exist, you may need to create it or ensure that it is properly defined.
  
  
  
  Review OData Service Configuration:
  
  Use transaction /IWFND/MAINT_SERVICE to check the service configuration. Ensure that the service is correctly registered and that all necessary data types are included in the service definition.
  
  
  
  Regenerate the OData Service:
  
  Sometimes, regenerating the OData service can resolve issues. You can do this by using transaction /IWFND/MAINT_SERVICE to delete and then re-add the service or by using transaction /IWBEP/REG_SERVICE to regenerate the service.
  
  
  
  Check for Transport Issues:
  
  If the issue arose after a transport, check the transport logs for any errors. Ensure that all dependent objects were transported correctly.
  
  
  
  Namespace Verification:
  
  Verify that the data type is in the correct namespace and that the OData service is configured to recognize it.
  
  
  
  Debugging:
  
  If the above steps do not resolve the issue, consider debugging the OData service to trace where the error is occurring. This can provide more insight into what is causing the data type to not be found.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for the error message or related keywords in the SAP Support Portal.
  Documentation: Review the SAP Gateway and OData documentation for best practices in defining and managing data types and services.
  Community Forums: Consider checking SAP Community forums or other developer forums for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify and resolve the issue related to the /IWBEP/CM_MGW_RT120 Data type not found '&1' error message.