How To Fix GW055 - Connection & not found

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 055

• Message text: Connection & not found

What causes this issue?

The connection you selected has not been found. It has been deleted,
because the communication has been closed in the meantime.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GW055 - Connection & not found ?

  The SAP error message GW055 ("Connection & not found") typically occurs in the context of SAP Gateway services when the system is unable to find a specified connection. This can happen for various reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Causes of GW055 Error
  
  Incorrect Connection Name: The connection name specified in the request may be incorrect or misspelled.
  Service Not Registered: The OData service or the connection may not be properly registered in the SAP Gateway.
  Authorization Issues: The user may not have the necessary authorizations to access the specified connection.
  Network Issues: There may be network connectivity issues preventing access to the service.
  Configuration Issues: The SAP Gateway configuration may not be set up correctly, leading to the inability to find the connection.
  Service Activation: The OData service may not be activated in the SAP Gateway.
  
  Solutions to GW055 Error
  
  
  Check Connection Name:
  
  Verify that the connection name used in the request is correct and matches the registered connection in the SAP Gateway.
  
  
  
  Register the Service:
  
  Use transaction code /IWFND/MAINT_SERVICE to check if the OData service is registered. If not, register the service.
  
  
  
  Activate the Service:
  
  Ensure that the OData service is activated. You can do this in the same transaction (/IWFND/MAINT_SERVICE).
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the service. This may involve checking roles and authorizations in the SAP system.
  
  
  
  Review Gateway Configuration:
  
  Check the configuration of the SAP Gateway to ensure that it is set up correctly. This may involve reviewing the settings in transaction /IWFND/CONFIG.
  
  
  
  Network Connectivity:
  
  Verify that there are no network issues preventing access to the SAP Gateway. This may involve checking firewalls, proxies, or other network configurations.
  
  
  
  Check Logs:
  
  Review the SAP Gateway logs for more detailed error messages. You can use transaction code /IWFND/ERROR_LOG to view error logs related to the Gateway.
  
  
  
  Restart Gateway Services:
  
  In some cases, restarting the SAP Gateway services may resolve transient issues.
  
  
  
  Related Information
  
  SAP Notes: Check SAP Notes related to the GW055 error for any specific patches or updates that may address the issue.
  Documentation: Refer to the official SAP documentation for more details on configuring and troubleshooting SAP Gateway services.
  Community Forums: Engage with the SAP Community or forums for additional insights and solutions from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify the cause of the GW055 error and implement a solution to resolve it.