/IWFND/MED_SVC_MU_LA026 - No service operation ID for node ID '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/MED_SVC_MU_LA -

• Message number: 026

• Message text: No service operation ID for node ID '&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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AnswerBot

• What is the cause and solution for SAP error message /IWFND/MED_SVC_MU_LA026 - No service operation ID for node ID '&1' ?

  The SAP error message /IWFND/MED_SVC_MU_LA026 No service operation ID for node ID '&1' typically occurs in the context of SAP Gateway and OData services. This error indicates that the system is unable to find a service operation ID for a specific node in the OData service. Here are the potential causes, solutions, and related information for this error:
  Causes:
  
  Missing Service Operation: The OData service may not have been properly defined or activated, leading to the absence of a service operation ID for the specified node.
  Incorrect Node ID: The node ID referenced in the error message may be incorrect or not defined in the service metadata.
  Service Activation Issues: The OData service might not be activated in the SAP Gateway, or there may be issues with the service registration.
  Model Issues: There could be issues with the data model or the way the service is designed, leading to inconsistencies in the service operations.
  Authorization Issues: The user may not have the necessary authorizations to access the service or specific operations.
  
  Solutions:
  
  
  Check Service Definition:
  
  Go to the SAP Gateway Service Builder (transaction code SEGW) and verify that the service is correctly defined and that the node ID exists.
  Ensure that the service operation is properly defined for the node in question.
  
  
  
  Activate the Service:
  
  Ensure that the OData service is activated in the SAP Gateway. You can do this using transaction code /IWFND/MAINT_SERVICE.
  Check if the service is listed and activated. If not, activate it.
  
  
  
  Check Metadata:
  
  Access the service metadata (usually available at /sap/opu/odata/sap/<service_name>/$metadata) and verify that the node ID and service operations are correctly defined.
  
  
  
  Review Model and Implementation:
  
  In the Service Builder, check the implementation of the service operations and ensure that they are correctly mapped to the corresponding data model.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to access the OData service and its operations. Check the roles assigned to the user.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the service to identify where the failure occurs. You can set breakpoints in the implementation class of the OData service.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SEGW: Service Builder for OData services.
  /IWFND/MAINT_SERVICE: Maintenance of OData services.
  /IWFND/GW_CLIENT: Gateway Client for testing OData services.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to this error message.
  
  
  Documentation: Refer to the SAP Gateway documentation for more details on service creation, activation, and troubleshooting.
  
  
  By following these steps, you should be able to identify and resolve the issue related to the error message /IWFND/MED_SVC_MU_LA026.