How To Fix 00477 - Communication system error: confirm failed

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 477

• Message text: Communication system error: confirm 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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Smart SAP Assistant

• What is the cause and solution for SAP error message 00477 - Communication system error: confirm failed ?

  The SAP error message "00477 Communication system error: confirm 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 the execution of remote function calls (RFC), when using the SAP Gateway, or when interacting with external applications.
  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 communication parameters can lead to this error.
  Timeouts: If the external system takes too long to respond, the SAP system may time out and generate this error.
  Authorization Issues: The user or service account may not have the necessary permissions to perform the requested operation.
  Service Unavailability: The external service or system may be down or not reachable.
  Version Mismatch: Incompatibility between the SAP system and the external system due to different versions or protocols.
  
  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 Configuration: Verify the settings in the RFC destination (transaction code SM59). Ensure that the connection parameters are correct and that the destination is properly configured.
  Increase Timeout Settings: If timeouts are suspected, consider increasing the timeout settings in the RFC destination configuration.
  Check Authorizations: Ensure that the user or service account has the necessary authorizations to access the external system or service.
  Monitor External System: Check the status of the external system or service to ensure it is operational. Look for any logs or alerts that may indicate issues.
  Review SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches or updates.
  Debugging: If the issue persists, consider enabling debugging or logging to capture more detailed information about the error.
  
  Related Information:
  
  Transaction Codes: 
  
  SM59 - RFC Destinations
  SM21 - System Log
  ST22 - Dump Analysis
  SLG1 - Application Log
  
  
  SAP Notes: Search for specific SAP Notes related to communication errors or the specific context in which the error occurs.
  Documentation: Review SAP documentation related to the specific modules or components involved in the communication.
  
  If the problem continues after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.