How To Fix CNVMBT216 - Not all rfc destinations are ready for use. (see long text)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBT - Messages for MBT/API/PCL

• Message number: 216

• Message text: Not all rfc destinations are ready for use. (see long text)

What causes this issue?

The system has detected an issue in the defintion of RFC destinations
that are used in the present context.
The issue might be related to locally or remotely defined destinations.
Reasons for an issue could be (for example):
unavailaiblity of systems due to connection issues or system downtime
RFC user issues (e.g. locked user / missing authorizations)
Issue in control data of RFC destination assignment for the given
context
Changes in the RFC destination settings that have been directly
performed viy transaction SM59

System Response

The process step 'Define RFC Destinations' ( technical name
PC001_RFC_MANAGEMENT) is reporting errors.

How to fix this error?

Enter extended view of the current process tree and evaluate the log of
process step 'Define RFC Destinations' .
Execute the process step in order to Re-execute all checks for the given
destinations.
Contact your system administrator in order to check connection issues
that are reported for certain destinations / users in the different
systems .

Procedure for System Administrators

Check settings of relevant RFC destinations using transaction SM59 .
Check status of RFC users with standard user management transactions
(e.g. SU01)

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNVMBT216 - Not all rfc destinations are ready for use. (see long text) ?

  The SAP error message CNVMBT216 indicates that not all RFC (Remote Function Call) destinations are ready for use. This error typically arises during data migration or system conversion processes, particularly when using tools like SAP S/4HANA Migration Cockpit or other data transfer methods that rely on RFC connections.
  Cause:
  
  RFC Destination Configuration: The RFC destinations may not be properly configured in the SAP system. This could be due to missing or incorrect connection parameters.
  Network Issues: There may be network connectivity issues preventing the SAP system from reaching the target system.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the target system.
  Target System Availability: The target system may be down or not available for connections.
  Transport Layer Issues: There could be issues with the transport layer that affect the ability to establish RFC connections.
  
  Solution:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Verify that the RFC destinations are correctly configured and test the connections. Ensure that the connection type (e.g., TCP/IP) is appropriate for your setup.
  Make sure that the target system is specified correctly, including the correct system ID, client, and instance number.
  
  
  
  Test Connections:
  
  Use the "Test Connection" feature in SM59 to check if the RFC destinations are reachable. If the test fails, investigate the error message provided.
  
  
  
  Check Network Connectivity:
  
  Ensure that there are no firewall or network issues preventing access to the target system. You can use tools like ping or telnet to check connectivity.
  
  
  
  Review User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations in both the source and target systems.
  
  
  
  Check Target System Status:
  
  Verify that the target system is up and running. If it is down, you will need to bring it back online.
  
  
  
  Review Transport Layer:
  
  If applicable, check for any issues with the transport layer that might affect RFC connections.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or patches related to this error.
  Documentation: Review the official SAP documentation for the specific migration or data transfer tool you are using, as it may contain troubleshooting steps specific to that tool.
  Logs: Check the system logs (transaction SM21) and the developer trace files (transaction ST11) for any additional error messages that could provide more context.
  
  By following these steps, you should be able to identify and resolve the issue causing the CNVMBT216 error message.