How To Fix /IWFND/MED305 - System alias not allowed for "Co-deployed only" processing

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/MED -

• Message number: 305

• Message text: System alias not allowed for "Co-deployed only" processing

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/MED305 - System alias not allowed for "Co-deployed only" processing ?

  The SAP error message /IWFND/MED305 System alias not allowed for "Co-deployed only" processing typically occurs in the context of SAP Gateway and OData services. This error indicates that the system alias being used is not permitted for a specific type of processing, particularly when the service is configured to be co-deployed.
  Cause:
  
  Co-deployment Configuration: The error arises when you attempt to access an OData service that is configured for co-deployment, but the system alias you are using is not set up correctly for this type of processing.
  System Alias Settings: The system alias may not be defined properly in the SAP Gateway settings or may not correspond to the expected backend system.
  Service Activation: The OData service might not be activated correctly in the SAP Gateway or the backend system.
  
  Solution:
  
  
  Check System Alias Configuration:
  
  Go to the SAP Gateway system and check the configuration of the system alias. Ensure that it is correctly defined and points to the appropriate backend system.
  You can check this in transaction SPRO under SAP NetWeaver > Gateway > OData Channel > Configuration > System Aliases.
  
  
  
  Review Service Activation:
  
  Ensure that the OData service is activated in the SAP Gateway system. You can do this using transaction /IWFND/MAINT_SERVICE.
  Check if the service is listed and activated for the correct system alias.
  
  
  
  Adjust Service Settings:
  
  If the service is intended to be co-deployed, ensure that the settings in the service definition are correct. You may need to adjust the service settings to allow for the correct system alias.
  
  
  
  Check Backend System:
  
  Ensure that the backend system is accessible and that the OData service is properly implemented and active in the backend.
  
  
  
  Testing:
  
  After making the necessary changes, test the OData service again to see if the error persists.
  
  
  
  Related Information:
  
  Co-deployment: This refers to the deployment of both the SAP Gateway and the backend system in a way that they can communicate directly. It is important to ensure that the configurations are aligned for this setup.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Documentation: Refer to the official SAP documentation for OData services and SAP Gateway for more detailed guidance on configuration and troubleshooting.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.