How To Fix GW460 - Communication system error; flush failed

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 460

• Message text: Communication system error; flush failed

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.

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message GW460 - Communication system error; flush failed ?

  The SAP error message GW460, which indicates a "Communication system error; flush failed," typically arises in the context of the SAP Gateway or when there are issues with communication between the SAP system and external systems or clients. This error can occur due to various reasons, including network issues, configuration problems, or resource limitations.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP system and the client or external system can lead to communication failures.
  Resource Limitations: Insufficient memory or CPU resources on the SAP application server can cause flush operations to fail.
  Configuration Errors: Incorrect settings in the SAP Gateway or related components can lead to communication errors.
  Timeouts: Long-running processes or timeouts in the communication can result in flush failures.
  Transport Layer Issues: Problems with the transport layer (e.g., HTTP, RFC) can also lead to this error.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the SAP system and the client. Use tools like ping or traceroute to diagnose connectivity problems.
  Monitor System Resources: Check the SAP application server's memory and CPU usage. If resources are low, consider optimizing the system or increasing the resources available.
  Review Configuration Settings: Verify the configuration of the SAP Gateway and ensure that all settings are correct. This includes checking the SM59 RFC destinations and ensuring they are properly configured.
  Increase Timeout Settings: If timeouts are causing the issue, consider increasing the timeout settings in the relevant configuration.
  Check SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  Review Logs: Check the system logs (transaction SM21) and the Gateway logs (transaction SMGW) for more detailed error messages that can provide additional context.
  Restart Services: If the issue persists, consider restarting the SAP Gateway service or the entire SAP system as a last resort.
  
  Related Information:
  
  SAP Notes: Search for specific SAP Notes related to GW460 for any patches or updates that may address the issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for the Gateway and communication protocols to ensure proper configuration and best practices.
  
  If the problem continues after trying the above solutions, it may be necessary to involve SAP support for further investigation.