How To Fix /IWFND/CM_MGW051 - Resource not found for the segment '&'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW -

• Message number: 051

• Message text: Resource not found for the segment '&'

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_MGW051 - Resource not found for the segment '&' ?

  The SAP error message /IWFND/CM_MGW051 Resource not found for the segment '&' typically occurs in the context of SAP Gateway and OData services. This error indicates that the requested resource (or segment) in the OData service is not found. Here’s a breakdown of the potential causes, solutions, and related information:
  Causes:
  
  Incorrect URL: The URL being used to access the OData service may be incorrect or malformed. This could include incorrect entity names or missing segments.
  Service Not Activated: The OData service might not be activated in the SAP Gateway. If the service is not active, it cannot be accessed.
  Authorization Issues: The user may not have the necessary authorizations to access the requested resource.
  Data Model Changes: If there have been changes to the data model (e.g., entities or properties were renamed or deleted), the existing requests may no longer match the current model.
  Service Versioning: If the OData service has multiple versions, the request might be targeting a version that does not include the requested resource.
  Backend Issues: There could be issues in the backend system that prevent the resource from being retrieved.
  
  Solutions:
  
  Check the URL: Verify that the URL used to access the OData service is correct. Ensure that all segments are properly defined and match the service definition.
  Activate the Service: Go to the SAP Gateway Service Builder (transaction code /IWFND/MAINT_SERVICE) and check if the service is activated. If not, activate it.
  Review Authorizations: Ensure that the user has the necessary authorizations to access the OData service and the specific resource.
  Update the Data Model: If there have been changes to the data model, update the OData service accordingly. You may need to regenerate the service or adjust the request to match the new model.
  Check Service Version: If applicable, ensure that you are using the correct version of the OData service that includes the requested resource.
  Debugging: Use transaction /IWFND/ERROR_LOG to check for any additional error messages or logs that can provide more context about the issue.
  Backend System Check: If the issue persists, check the backend system for any errors or issues that might be affecting the data retrieval.
  
  Related Information:
  
  SAP Gateway Documentation: Review the official SAP documentation for SAP Gateway and OData services for more detailed information on service activation and troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found effective.
  Transaction Codes:
  
  /IWFND/MAINT_SERVICE: To manage and activate OData services.
  /IWFND/ERROR_LOG: To view error logs related to OData services.
  
  
  
  By following these steps, you should be able to identify and resolve the issue related to the /IWFND/CM_MGW051 Resource not found for the segment '&' error message.