How To Fix /IWBEP/CM_MGW_RT079 - Set a new main service necessary before unassign the old one

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 079

• Message text: Set a new main service necessary before unassign the old one

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT079 - Set a new main service necessary before unassign the old one ?

  The SAP error message /IWBEP/CM_MGW_RT079 typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an attempt to unassign a main service without first setting a new main service. This situation can arise when you are trying to modify the service configuration in the SAP Gateway.
  Cause:
  The error is caused by the following scenarios:
  
  Service Configuration Issue: You are trying to unassign a main service from a service group or a service configuration without assigning a new main service first.
  Service Dependencies: The system requires that a main service is always assigned to ensure that there is a fallback or a primary service available for processing requests.
  
  Solution:
  To resolve this error, follow these steps:
  
  
  Assign a New Main Service:
  
  Go to the SAP Gateway Service Builder (transaction code SEGW).
  Open the service group or the service configuration where the error occurred.
  Assign a new main service by selecting the appropriate service and marking it as the main service.
  
  
  
  Unassign the Old Main Service:
  
  Once a new main service is assigned, you can then proceed to unassign the old main service without encountering the error.
  
  
  
  Check Service Activation:
  
  Ensure that all services are properly activated. You can do this in the transaction IWFND/MAINT_SERVICE where you can manage your OData services.
  
  
  
  Review Service Dependencies:
  
  Check if there are any dependencies or references to the old main service that might prevent it from being unassigned.
  
  
  
  Transport Requests:
  
  If you are working in a development environment and planning to transport changes, ensure that the transport requests are correctly set up for the new main service.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional insights or updates regarding this error.
  Documentation: Review the SAP Gateway documentation for best practices on managing OData services and service groups.
  Community Forums: Engage with the SAP Community or forums for discussions related to similar issues and solutions shared by other users.
  
  By following these steps, you should be able to resolve the error and manage your SAP Gateway services effectively.