How To Fix /IWFND/CM_MGW066 - Loading the metadata for service '&1' failed. Check the error log.

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW -

• Message number: 066

• Message text: Loading the metadata for service '&1' failed. Check the error log.

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 /IWFND/CM_MGW066 - Loading the metadata for service '&1' failed. Check the error log. ?

  The SAP error message /IWFND/CM_MGW066 Loading the metadata for service '&1' failed. Check the error log. typically occurs in the context of SAP Gateway services, particularly when there is an issue loading the metadata for a specific OData service. This can happen for various reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  Service Activation Issues: The OData service may not be properly activated in the SAP Gateway.
  Authorization Problems: The user may not have the necessary authorizations to access the service or its metadata.
  Model Issues: There may be issues with the underlying data model or the service definition.
  Transport Issues: If the service was recently transported from one system to another, there may be inconsistencies.
  Backend Errors: Errors in the backend system (like ABAP errors) can prevent the metadata from being loaded.
  Network Issues: Connectivity issues between the SAP Gateway and the backend system can also lead to this error.
  
  Solutions:
  
  
  Check Service Activation:
  
  Go to transaction code /IWFND/MAINT_SERVICE.
  Ensure that the service is activated. If not, activate it.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the OData service. You can check this in transaction SU53 after attempting to access the service.
  
  
  
  Review the Error Log:
  
  Check the error log for more details. You can do this by going to transaction SLG1 and filtering for the relevant application log (e.g., IWFND).
  Look for any specific error messages that can give you more context about the failure.
  
  
  
  Check the Service Definition:
  
  Review the service definition in transaction /IWFND/MAINT_SERVICE to ensure that all necessary components are correctly defined.
  
  
  
  Test the Backend:
  
  Test the backend service directly (if applicable) to ensure that it is functioning correctly. You can use transaction SE80 or SE37 to test the function modules or classes involved.
  
  
  
  Clear Cache:
  
  Sometimes, clearing the cache can resolve issues. You can do this using transaction /IWFND/CACHE to clear the OData cache.
  
  
  
  Check Transport Requests:
  
  If the service was transported, ensure that all related objects were transported correctly and that there are no missing dependencies.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues between the SAP Gateway and the backend system.
  
  
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that might address specific issues related to your version of SAP Gateway or the OData service.
  Documentation: Refer to the official SAP documentation for OData services and SAP Gateway for best practices and troubleshooting steps.
  Community Forums: Consider checking SAP Community forums or other online resources for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWFND/CM_MGW066 error message.