How To Fix /SAPPSPRO/_NO_RFC001 - Communication failure

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPPSPRO/_NO_RFC -

• Message number: 001

• Message text: Communication failure

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 /SAPPSPRO/_NO_RFC001 - Communication failure ?

  The SAP error message /SAPPSPRO/_NO_RFC001 Communication failure typically indicates a problem with the Remote Function Call (RFC) communication between SAP systems or between an SAP system and an external system. This error can arise due to various reasons, including network issues, configuration problems, or system downtime.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP systems can lead to communication failures.
  RFC Destination Configuration: Incorrect or missing configuration of the RFC destination in the SAP system can cause this error.
  System Downtime: The target system may be down or not reachable due to maintenance or other issues.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  Firewall Restrictions: Firewalls or security settings may be blocking the communication between the systems.
  SAP Gateway Issues: Problems with the SAP Gateway service can also lead to communication failures.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination that is causing the issue.
  Test the connection using the "Connection Test" button to see if it is working correctly.
  
  
  Check System Status: Ensure that the target SAP system is up and running. You can check the system status in transaction SM51 or by accessing the system directly.
  Review Authorizations: Make sure that the user credentials used for the RFC connection have the necessary authorizations to perform the required actions.
  Firewall Settings: Check the firewall settings to ensure that the required ports for SAP communication are open.
  SAP Gateway Configuration: Ensure that the SAP Gateway is properly configured and running. You can check the status of the gateway using transaction SMGW.
  Review Logs: Check the system logs (transaction SM21) and the developer trace files (transaction ST11) for any additional error messages that might provide more context about the issue.
  
  Related Information:
  
  RFC (Remote Function Call): A protocol used in SAP systems to enable communication between different SAP systems or between SAP and non-SAP systems.
  Transaction Codes:
  
  SM59: Manage RFC destinations.
  SM51: Display active application servers.
  SMGW: Monitor the SAP Gateway.
  SM21: View system logs.
  ST11: Access developer traces.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to RFC communication failures.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.