2960020 - Warning Message: DMC_RT_MSG622 using same Project in different clients

While performing the migration using the same Project in different clients the below error occurs;

Source record <record key> already transferred to target system
Message no. DMC_RT_MSG622

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

S/4HANA OnPrem

DMC_RT_MSG622, DMC_RT_MSG 622, Source record &1&2&3&4 already transferred to target system, Quellsatz &1&2&3&4 bereits ins Zielsystem übertragen

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental." , KBA , CA-LT-MC , S/4HANA Migration Cockpit , CA-GTF-MIG , SAP S/4HANA Data Migration Cockpit Content , Problem