How To Fix FL358 - COMMUNICATION_FAILUER is a system exception

SAP Error Message - Details

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 358

• Message text: COMMUNICATION_FAILUER is a system exception

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 FL358 - COMMUNICATION_FAILUER is a system exception ?

  The SAP error message FL358 "COMMUNICATION_FAILURE is a system exception" typically indicates that there is a communication issue between the SAP system and an external system or service. This could be due to various reasons, such as network issues, configuration problems, or issues with the external system itself.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP system and the external system can lead to communication failures.
  Configuration Errors: Incorrect settings in the SAP system or the external system can prevent successful communication.
  Timeouts: If the external system takes too long to respond, the SAP system may time out and generate this error.
  Service Unavailability: The external service or system may be down or not reachable.
  Firewall or Security Settings: Firewalls or security settings may block the communication between the systems.
  Protocol Mismatch: The communication protocol used by the SAP system may not match that of the external system.
  
  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 Configuration Settings: Verify the configuration settings in both the SAP system and the external system. Ensure that all necessary parameters are correctly set.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the SAP system or the external system.
  Check External System Status: Ensure that the external system or service is up and running. If it is down, you may need to wait until it is restored.
  Review Firewall Rules: Check the firewall settings to ensure that they are not blocking the communication between the systems. You may need to work with your network/security team to adjust these settings.
  Log Analysis: Review the SAP application logs (transaction SLG1) and the external system logs for any additional error messages or clues that can help diagnose the issue.
  Consult Documentation: Refer to the SAP documentation or the documentation of the external system for any specific configuration or troubleshooting steps related to communication issues.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Use transaction codes like SM21 (System Log), ST22 (Dump Analysis), and SLG1 (Application Log) to gather more information about the error.
  Support: If the issue persists, consider reaching out to SAP support or your internal IT support team for further assistance.
  
  By following these steps, you should be able to identify and resolve the communication failure issue indicated by the FL358 error message.