How To Fix CNV_MBT_CWB017 - Replacing the RFC destination is very critical (see long text)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT_CWB - Messages for CWB-PCL-Interface

• Message number: 017

• Message text: Replacing the RFC destination is very critical (see long text)

Replacing the RFC Destination
You are attemping to replace the RFC destination to the execution
system. Replacing the RFC destination is very critical and needs to be
done very carefully.
New Destination with Same Target
You can replace the RFC destination with a new destination if the target
of the new destination is still refering to the same execution system.
The new destination can have different
Technical settings, for example usage of the database server instead of
an application server. Make sure that the target system and client are
still the same after replacing the RFC destination
Login information, for example change of the login language or the login
user
New Destination with Different Target
You can replace the RFC destination with a new one refering to another
system or client only if
the new target client was created as a copy of the current used client
and
the package execution was on hold during the client copy and
no further activities were made in the original client

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

Otherwise changing the target system or the target client of the RFC
destination after loading a package is not supported. Changing the
target may lead to INCONSISTENCIES in the target system and invalidates
the current package.
If the package was loaded in the wrong target system / client, the
correct process would be to deactivate the package and load a new
package in the correct execution system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT_CWB017 - Replacing the RFC destination is very critical (see long text) ?

  The SAP error message CNV_MBT_CWB017 indicates that there is a critical issue related to the replacement of an RFC (Remote Function Call) destination in the context of a data migration or conversion process. This error typically arises during the execution of a migration project, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  The error is triggered when the system detects that the RFC destination being used is not suitable for the operation being performed. This could be due to several reasons, including:
  
  Incorrect RFC Configuration: The RFC destination may not be configured correctly, leading to connectivity issues.
  Missing Authorization: The user or system may lack the necessary authorizations to access the specified RFC destination.
  Network Issues: There may be network connectivity problems preventing the system from reaching the target system defined in the RFC destination.
  Incompatible System Versions: The source and target systems may not be compatible, leading to issues when trying to replace or use the RFC destination.
  
  Solution:
  To resolve the CNV_MBT_CWB017 error, you can follow these steps:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Verify the configuration of the RFC destination that is causing the issue. Ensure that the connection parameters (such as target host, system number, client, etc.) are correct.
  
  
  
  Test the RFC Connection:
  
  In transaction SM59, select the RFC destination and use the "Test Connection" option to ensure that the connection is working properly.
  
  
  
  Review Authorizations:
  
  Ensure that the user executing the migration has the necessary authorizations to access the RFC destination. Check the roles and profiles assigned to the user.
  
  
  
  Check Network Connectivity:
  
  Ensure that there are no network issues preventing the connection to the target system. This may involve checking firewalls, VPNs, or other network configurations.
  
  
  
  Consult SAP Notes:
  
  Look for any relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  
  
  Review Migration Settings:
  
  If you are using a migration tool, review the settings and parameters to ensure that they are correctly configured for the migration process.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance. Provide them with the error message details and any relevant logs.
  
  
  
  Related Information:
  
  Transaction Codes: SM59 (RFC Destinations), ST22 (Dump Analysis), SLG1 (Application Log).
  Documentation: Review the official SAP documentation for the migration tool you are using, as it may provide additional insights into RFC configuration and troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the CNV_MBT_CWB017 error.