How To Fix CNVMBTRFC044 - Connection to destination &1 failed.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBTRFC - Messages used in RFC Management and its objects

• Message number: 044

• Message text: Connection to destination &1 failed.

What causes this issue?

With the given destination in import parameter ip_destination_id a
connection to the system addressed in that destination failed. The
reasons could be that the system is not available, the name or password
is not correct, the function module does not exist in the system or
others.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNVMBTRFC044 - Connection to destination &1 failed. ?

  The SAP error message CNVMBTRFC044 indicates that there is a failure in establishing a connection to a specified destination (denoted by &1). This error typically occurs in the context of Remote Function Calls (RFC) when the system is trying to connect to another SAP system or an external system.
  Causes:
  
  Incorrect Destination Configuration: The RFC destination may not be configured correctly in the SAP system.
  Network Issues: There may be network connectivity issues between the SAP systems.
  Authorization Issues: The user credentials used for the connection may not have the necessary authorizations.
  Service Not Running: The target system or service may not be running or may be down.
  Firewall Restrictions: Firewalls may be blocking the connection between the systems.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  
  Solutions:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 and check the configuration of the RFC destination that is failing.
  Ensure that the connection type is correct (e.g., TCP/IP, TMW, etc.).
  Test the connection from within SM59 to see if it is successful.
  
  
  
  Verify Network Connectivity:
  
  Use tools like ping or telnet to check if the target system is reachable from the source system.
  Ensure that the hostname and port number are correct.
  
  
  
  Check User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to access the target system.
  
  
  
  Check Target System Status:
  
  Ensure that the target SAP system is up and running.
  Check if the necessary services (like the SAP Gateway) are active.
  
  
  
  Review Firewall Settings:
  
  Check if there are any firewall rules that might be blocking the connection between the two systems.
  Ensure that the required ports are open.
  
  
  
  SAP Gateway Configuration:
  
  Check the configuration of the SAP Gateway on both the source and target systems.
  Ensure that the gateway is running and properly configured.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: To manage and test RFC destinations.
  SMGW: To monitor the SAP Gateway.
  SICF: To check and manage HTTP services.
  
  
  
  Logs and Traces:
  
  Check the system logs (transaction SM21) for any related error messages.
  Use transaction ST22 to check for dumps that might provide more context.
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that might address specific issues related to CNVMBTRFC044.
  
  
  By following these steps, you should be able to diagnose and resolve the CNVMBTRFC044 error effectively.