How To Fix CCMS_GRMG021 - RFC connection to &1 is not available: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CCMS_GRMG - Alert Messages for GRMG Scenarios (Availability Monitoring)

• Message number: 021

• Message text: RFC connection to &1 is not available: &2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CCMS_GRMG021 - RFC connection to &1 is not available: &2 ?

  The SAP error message CCMS_GRMG021 indicates that there is an issue with the Remote Function Call (RFC) connection to a specified system. The message format is as follows:
  CCMS_GRMG021 RFC connection to &1 is not available: &2
  Where &1 typically represents the target system (e.g., a hostname or system ID) and &2 provides additional details about the nature of the connection issue.
  Causes
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system.
  RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system (transaction SM59).
  Target System Down: The target SAP system may be down or not reachable.
  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 connection.
  SAP Gateway Issues: The SAP Gateway service may not be running on the target system.
  
  Solutions
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the target system is reachable from the source system.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination that corresponds to the target system.
  Test the connection using the "Connection Test" button.
  
  
  
  Check Target System Status:
  
  Ensure that the target SAP system is up and running.
  Check the system logs for any errors that might indicate why the system is not reachable.
  
  
  
  Review User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to access the target system.
  
  
  
  Firewall and Security Settings:
  
  Check if there are any firewall rules that might be blocking the connection.
  Ensure that the necessary ports for RFC communication (typically port 3200 for SAP) are open.
  
  
  
  SAP Gateway Service:
  
  Ensure that the SAP Gateway service is running on the target system. You can check this in transaction SMGW.
  
  
  
  Check Logs:
  
  Review the system logs (transaction SM21) for any related error messages that might provide more context about the issue.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SMGW: SAP Gateway Monitor
  SM21: System Log
  ST22: Dump Analysis (to check for ABAP runtime errors)
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC connections.
  
  
  Documentation: Refer to the official SAP documentation for more details on configuring and troubleshooting RFC connections.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the CCMS_GRMG021 error message.