How To Fix GW665 - Service name is not known

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 665

• Message text: Service name is not known

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 GW665 - Service name is not known ?

  The SAP error message GW665 ("Service name is not known") typically occurs in the context of SAP Gateway or when trying to access a service that is not properly defined or registered in the system. This error can arise due to various reasons, including configuration issues, network problems, or missing service definitions.
  Causes:
  
  Service Not Registered: The service you are trying to access is not registered in the SAP Gateway.
  Incorrect Service Name: The service name you are using might be misspelled or incorrect.
  Network Issues: There may be network connectivity issues preventing access to the service.
  Authorization Issues: The user may not have the necessary authorizations to access the service.
  Gateway Configuration: The SAP Gateway might not be configured correctly, leading to service discovery issues.
  
  Solutions:
  
  
  Check Service Registration:
  
  Use transaction code /IWFND/MAINT_SERVICE in the SAP GUI to check if the service is registered.
  If the service is not listed, you may need to register it.
  
  
  
  Verify Service Name:
  
  Double-check the service name you are using in your request. Ensure it matches the registered service name exactly.
  
  
  
  Check Network Connectivity:
  
  Ensure that there are no network issues preventing access to the SAP Gateway. You can test connectivity using tools like ping or telnet.
  
  
  
  Review Authorizations:
  
  Ensure that the user has the necessary authorizations to access the service. You can check this in transaction SU53 after attempting to access the service.
  
  
  
  Gateway Configuration:
  
  Review the configuration of the SAP Gateway. Ensure that the necessary components are running and that the system is properly configured to handle service requests.
  
  
  
  Check Logs:
  
  Review the SAP Gateway logs for any additional error messages or information that might help diagnose the issue. You can check the logs using transaction SLG1.
  
  
  
  Restart Gateway Services:
  
  If you suspect that the issue might be due to a temporary glitch, consider restarting the SAP Gateway services.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the error message GW665 for any specific patches or updates that might address the issue.
  Documentation: Refer to the official SAP documentation for more details on service registration and configuration in SAP Gateway.
  Community Forums: Consider searching or posting in SAP community forums for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify and resolve the cause of the GW665 error in your SAP environment.