Message type: E = Error
Message class:  CNV_CDMC_CA - CDMC Clearing Analysis 
Message number: 096
Message text: Enter exactly one system with role 'C'
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The SAP error message CNV_CDMC_CA096 indicates that the system expects exactly one system with the role 'C' (which typically stands for "Central System") to be defined in the context of a specific configuration or migration process. This error is often encountered during data migration or system conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: The error occurs when: There are no systems defined with the role 'C'. More than one system is defined with the role 'C'. The configuration is incomplete or incorrect, leading to ambiguity in identifying the central system.
Solution: To resolve this error, you can follow these steps: Check System Configuration: Go to the relevant transaction or configuration area where systems are defined (e.g., transaction CNV_MBT_COCKPIT or similar). Verify the list of systems and their assigned roles. Ensure Exactly One Central System: If there are no systems with role 'C', you need to define one. If there are multiple systems with role 'C', you
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