How To Fix GW743 - Connection has already been closed

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 743

• Message text: Connection has already been closed

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 GW743 - Connection has already been closed ?

  The SAP error message GW743 ("Connection has already been closed") typically occurs in the context of SAP Gateway or when using OData services. This error indicates that the connection to the backend system has been terminated unexpectedly, which can happen for several reasons. Below are some common causes, potential solutions, and related information:
  Causes:
  
  Timeouts: The connection may have timed out due to inactivity. This can happen if the client does not send any requests for a certain period.
  Network Issues: Intermittent network connectivity problems can lead to the connection being dropped.
  Backend System Issues: The backend system (e.g., an SAP application server) may have encountered an error or been restarted, causing the connection to close.
  Resource Limitations: The server may be running out of resources (e.g., memory, CPU), leading to connection drops.
  Configuration Issues: Incorrect configuration settings in the SAP Gateway or the backend system can lead to connection problems.
  
  Solutions:
  
  Increase Timeout Settings: Check and increase the timeout settings for the SAP Gateway and the backend system. This can help prevent connections from being closed due to inactivity.
  Check Network Stability: Ensure that the network connection between the client and the SAP system is stable. Look for any network issues that may be causing interruptions.
  Monitor Backend System: Check the health and performance of the backend system. Look for any logs or error messages that might indicate issues.
  Review Configuration: Verify the configuration settings for the SAP Gateway and the backend system. Ensure that they are set up correctly to handle connections.
  Reconnect Logic: Implement logic in your application to handle reconnections gracefully when a connection is lost. This can help improve the user experience.
  Update SAP Components: Ensure that you are using the latest patches and updates for your SAP components, as bugs and issues are often resolved in newer versions.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the GW743 error for any specific fixes or recommendations provided by SAP.
  Logs and Traces: Review the logs and traces in the SAP Gateway and backend system to gather more information about the cause of the connection closure.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the problem persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.