Message type: E = Error
Message class:  CNV_CDMC_CTS - CDMC Change and Transport System Analysis 
Message number: 042
Message text: Use an RFC destination other than NONE for system role '&'(See Long Text)
RFC destination NONE is specified for the system role 'S' or 'T'.
RFC destination 'NONE' should not be used for the system roles 'S'
(Statistics) or 'T' (Target), as it is a pre-requisite to have the same
RFC destinations to the Statistics system and Target system in both the
Analysis and control system.
Use another RFC destination to the Statistics or Target system
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_CDMC_CTS042 indicates that there is an issue with the configuration of the system role in the context of a conversion or migration project, specifically related to the use of RFC (Remote Function Call) destinations. The message suggests that the system role you are trying to use is configured with an RFC destination set to "NONE," which is not acceptable for the operation you are attempting to perform.
Cause: The primary cause of this error is that the system role you are working with is not properly configured to communicate with other systems or components because it lacks a valid RFC destination. This can happen if: The RFC destination has not been defined in the SAP system. The system role is incorrectly set up or is missing necessary configuration. There is a misunderstanding of the required system roles and their corresponding RFC destinations.
Solution: To resolve this error, you should take the following steps: Check
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