How To Fix ST630 - No RFC connection could be established to the maintenance system

SAP Error Message - Details

• Message type: E = Error

• Message class: ST - Terminology Database

• Message number: 630

• Message text: No RFC connection could be established to the maintenance system

What causes this issue?

You want to maintain a terminology entry.

System Response

It is not possible at this time to create a link to the primary SAPterm
maintenance system.

How to fix this error?

Try again later.

Procedure for System Administrators

If the problem persists, contact the SAPterm administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ST630 - No RFC connection could be established to the maintenance system ?

  The SAP error message ST630 indicates that there is an issue with establishing a Remote Function Call (RFC) connection to the maintenance system. This can occur in various scenarios, such as when trying to access a system for support or maintenance purposes. Below are the potential causes, solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be network connectivity problems between the systems involved.
  Incorrect RFC Destination: The RFC destination configuration may be incorrect or missing in the SAP system.
  Authorization Issues: The user may not have the necessary authorizations to establish the RFC connection.
  System Configuration: The target system may not be configured correctly to accept RFC connections.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that both systems can communicate over the network. You can use tools like ping or telnet to test connectivity.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination that you are trying to connect to. Ensure that the connection type, target host, and system number are correct.
  Test the connection from SM59 to see if it is successful.
  
  
  
  Check Authorizations:
  
  Ensure that the user ID being used to establish the RFC connection has the necessary authorizations in both the source and target systems.
  
  
  
  Review System Configuration:
  
  Ensure that the target system is properly configured to accept RFC connections. Check the instance profile and ensure that the necessary parameters are set.
  
  
  
  Firewall and Security Settings:
  
  Check if there are any firewall rules that might be blocking the connection. Ensure that the required ports for SAP RFC communication (usually port 3200 for the SAP instance) are open.
  
  
  
  Check SAP Gateway:
  
  Ensure that the SAP Gateway service is running on the target system. You can check this using transaction SMGW.
  Review the gateway logs for any errors that might indicate why the connection cannot be established.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer traces (transaction ST22) for any additional error messages that might provide more context.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC connections.
  Documentation: Review the official SAP documentation for RFC connections and troubleshooting steps.
  SAP Community: Engage with the SAP Community forums for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the ST630 error related to RFC connections in SAP.