How To Fix GW457 - Communication system error; allocate failed; check the partner

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 457

• Message text: Communication system error; allocate failed; check the partner

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 GW457 - Communication system error; allocate failed; check the partner ?

  The SAP error message GW457 indicates a communication system error, specifically related to the allocation of resources for a communication partner. This error typically occurs in the context of SAP Gateway or when there are issues with the communication setup between SAP systems or between SAP and external systems.
  Causes of GW457 Error
  
  
  Resource Allocation Issues: The system may be unable to allocate the necessary resources for communication due to insufficient memory or other resource constraints.
  
  
  Network Issues: Problems with the network connection between the SAP system and the partner system can lead to communication failures.
  
  
  Configuration Errors: Incorrect configuration settings in the SAP Gateway or in the partner system can cause communication errors.
  
  
  Partner System Unavailability: The partner system may be down or unreachable, leading to failed communication attempts.
  
  
  Firewall or Security Settings: Firewalls or security settings may be blocking the communication between the SAP system and the partner.
  
  
  Solutions to GW457 Error
  
  
  Check System Resources: Ensure that the SAP system has sufficient memory and resources allocated. You may need to increase the memory allocation or restart the system.
  
  
  Verify Network Connectivity: Check the network connection between the SAP system and the partner system. Use tools like ping or traceroute to diagnose connectivity issues.
  
  
  Review Configuration Settings: Verify the configuration settings in the SAP Gateway and ensure that they are correctly set up for the communication with the partner system.
  
  
  Check Partner System Status: Ensure that the partner system is up and running. If it is down, coordinate with the relevant team to bring it back online.
  
  
  Examine Firewall Settings: Review firewall and security settings to ensure that they are not blocking the communication ports used by the SAP system.
  
  
  Check SAP Notes: Look for any relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  
  
  Review Logs: Check the SAP Gateway logs and system logs for any additional error messages or warnings that may provide more context about the issue.
  
  
  Restart Gateway Services: Sometimes, simply restarting the SAP Gateway services can resolve temporary communication issues.
  
  
  Related Information
  
  Transaction Codes: You can use transaction codes like SMGW (Gateway Monitor) to monitor the status of the SAP Gateway and check for any active connections or errors.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  Documentation: Refer to the official SAP documentation for detailed information on configuring and troubleshooting SAP Gateway communication.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.