How To Fix CNV_MBT_CWB012 - Changing 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: 012

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

Changing the RFC Destination
You are attemping to change the RFC destination to the execution system.
Changing this RFC destination is very critical and needs to be done very
carefully.
Change of Target Is Not Supported
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.
Change of Technical Settings / Login Information
You can change
The 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 the change to the settings.
The login information, for example change of the login language.
Changing the login user is only possible if the new user has still the
neccessary authorizations to execute the package steps

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT_CWB012 - Changing the RFC destination is very critical (see long text) ?

  The SAP error message CNV_MBT_CWB012 indicates that changing the RFC (Remote Function Call) destination is critical in the context of a specific operation, often related to data migration or conversion processes. This error typically arises during the execution of a migration project, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  
  Cause:
  
  Critical RFC Destination: The RFC destination being referenced is essential for the operation being performed. Changing it could disrupt the data migration process or lead to inconsistencies.
  
  Configuration Issues: The RFC destination may not be properly configured, or there may be issues with connectivity to the target system.
  Authorization Problems: The user executing the operation may not have the necessary authorizations to change the RFC destination.
  System Settings: The system settings may not allow for changes to critical RFC destinations during certain operations.
  
  
  Solution:
  
  Review RFC Configuration: Check the configuration of the RFC destination in transaction SM59. Ensure that it is correctly set