How To Fix 00457 - Communication system error (allocate failed); check the partner

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00457 - Communication system error (allocate failed); check the partner ?

  The SAP error message "00457 Communication system error (allocate failed); check the partner" typically indicates a problem with the communication between the SAP system and a partner system, which could be another SAP system or an external application. This error often arises due to resource allocation issues, such as memory or network problems.
  Causes:
  
  Resource Allocation Issues: The SAP system may be unable to allocate the necessary resources (like memory) to establish a communication session.
  Network Problems: There could be network connectivity issues between the SAP system and the partner system.
  Configuration Errors: Incorrect configuration settings in the RFC (Remote Function Call) destination or in the partner system.
  System Load: High load on the SAP system or the partner system can lead to resource allocation failures.
  Firewall or Security Settings: Firewalls or security settings may be blocking the communication between the systems.
  
  Solutions:
  
  Check System Resources: Monitor the system's memory and CPU usage. If the system is under heavy load, consider optimizing performance or increasing resources.
  Review Network Connectivity: Ensure that there is proper network connectivity between the SAP system and the partner system. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Configuration: Check the RFC destination settings in transaction SM59. Ensure that the connection parameters are correct and that the target system is reachable.
  Check Logs: Review the SAP system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages that might provide more context.
  Firewall Settings: Ensure that any firewalls between the systems are configured to allow the necessary traffic.
  Restart Services: If the issue persists, consider restarting the relevant services or the entire SAP system to clear any temporary issues.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error.
  
  Related Information:
  
  Transaction Codes: 
  
  SM59 - RFC Destinations
  SM21 - System Log
  SLG1 - Application Log
  
  
  SAP Support: If the issue cannot be resolved with the above steps, consider reaching out to SAP Support for further assistance.
  Documentation: Review SAP documentation related to communication errors and RFC configuration for more detailed troubleshooting steps.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the communication system error.