How To Fix 00478 - Communication system error: confirmed failed

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 478

• Message text: Communication system error: confirmed 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 00478 - Communication system error: confirmed failed ?

  The SAP error message "00478 Communication system error: confirmed failed" typically indicates a problem with the communication between the SAP system and an external system or service. This error can occur in various contexts, such as during remote function calls (RFC), when using the SAP Business Connector, or when integrating with other systems.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the external system.
  Configuration Errors: Incorrect configuration settings in the RFC destination or in the external system can lead to communication failures.
  Timeouts: The communication may be timing out due to slow response times from the external system.
  System Overload: The external system may be overloaded or down, causing it to be unable to respond to requests.
  Authorization Issues: The user or service account used for the communication may not have the necessary permissions.
  Firewall or Security Settings: Firewalls or security settings may be blocking the communication.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the SAP system and the external system is stable and functioning properly. You can use tools like ping or traceroute to diagnose network issues.
  Review RFC Destination: Verify the configuration of the RFC destination in SAP (transaction code SM59). Ensure that the connection parameters are correct and that the destination is reachable.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the RFC destination configuration.
  Monitor External System: Check the status of the external system to ensure it is operational and not experiencing high load or downtime.
  Check Authorizations: Ensure that the user or service account used for the communication has the necessary authorizations to access the external system.
  Review Firewall Settings: If applicable, check firewall settings to ensure that the necessary ports are open for communication between the systems.
  Check SAP Notes: Look for any relevant SAP Notes that may address known issues or provide patches related to this error.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SM21 (System Log) and ST22 (Dump Analysis) to check for additional error messages or dumps that may provide more context about the issue.
  SAP Support: If the issue persists, consider reaching out to SAP Support for further assistance, providing them with detailed logs and error messages.
  Documentation: Review SAP documentation related to communication errors and RFC configurations for best practices and troubleshooting steps.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the "00478 Communication system error: confirmed failed" message.