How To Fix GW033 - Computer name &1 is unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 033

• Message text: Computer name &1 is unknown

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 GW033 - Computer name &1 is unknown ?

  The SAP error message GW033 ("Computer name &1 is unknown") typically occurs in the context of SAP Gateway or when trying to establish a connection to a system or service. This error indicates that the system is unable to resolve the hostname or computer name specified in the error message.
  Cause:
  
  Incorrect Hostname: The hostname specified in the configuration is incorrect or misspelled.
  DNS Issues: The Domain Name System (DNS) is unable to resolve the hostname to an IP address.
  Network Configuration: There may be network issues preventing the system from reaching the specified hostname.
  SAP Gateway Configuration: The SAP Gateway might not be properly configured to recognize the hostname.
  Firewall or Security Settings: Firewalls or security settings may be blocking access to the specified hostname.
  
  Solution:
  
  Check Hostname: Verify that the hostname specified in the configuration is correct. Ensure there are no typos or incorrect entries.
  DNS Resolution: Use command-line tools (like ping, nslookup, or dig) to check if the hostname can be resolved to an IP address. If it cannot, you may need to update your DNS settings or add the hostname to the local hosts file.
  Network Connectivity: Ensure that there are no network issues preventing access to the hostname. Check your network connection and routing.
  SAP Gateway Configuration: Review the SAP Gateway configuration settings. Ensure that the system is properly set up to recognize the hostname.
  Firewall Settings: Check firewall settings to ensure that they are not blocking access to the hostname. Adjust the settings as necessary to allow traffic.
  SAP Notes: Check for any relevant SAP Notes that may address this issue. SAP frequently updates its knowledge base with solutions for common errors.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SM59 (RFC Destinations) to check the configuration of the connection.
  Logs: Review the system logs (transaction SM21) for any additional error messages that may provide more context.
  SAP Community: Consider searching or posting on the 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 diagnose and resolve the GW033 error in your SAP environment.