3743599 - WY072 "partner role must be unique in the master record" during C4C to S/4 business partner replication caused by reflexive partner function handling

• Inbound replication BusinessPartnerSUITEBulkReplicateRequest_In from C4C to S/4 fails with error WY072 “Partner role AG must be unique in the master record”.
• Payload partner functions are unique, but after inbound mapping, the system combines payload partner functions with those already stored in S/4, resulting in duplicate entries for the same partner role.

• SAP S/4HANA
• SAP S/4HANA Cloud Private Edition

WY072, partner role must be unique, business partner replication, c4c to s/4, partner functions, reflexive partner function, MDGV_BP_SYS_PAR, KNVP, PRESERVE_NOT_SUPPORTED_PF, CL_BP_ECC_CU_PF_WO_RFLX_BP_MAP, CL_MDG_BS_ECC_BP_CHECK, MDG_SE_BP_BULK_REPLRQ_IN, BusinessPartnerSUITEBulkReplicateRequest_In, uniqueness check , KBA , LO-MD-BP-WS , Web Service for Business Partner , Problem