3437869 - An error "entry xxxxxxxx does not exist in KNA1" when using the SOAP BusinessPartnerSUITEBulkReplicateRequest_In.

Customer met an error "entry xxxxxxxx does not exist in KNA1" when using the SOAP BusinessPartnerSUITEBulkReplicateRequest_In.

SAP S/4HANA cloud

The rootcause is that PartnerFunctions are sent with <ReceiverPartyInternalID>xxxxxxxx</ReceiverPartyInternalID>.
This is causing the error, because in this case the Business Partner itself is assigned to partner functions.
But this Business Partner doesn't exist at that point in time. ReceiverPartyInternalID makes no sense, when creating Customer.

Please don't send <ReceiverPartyInternalID> for partner functions.

BusinessPartnerSUITEBulkReplicateRequest_In, partner functions, ReceiverPartyInternalID , KBA , LO-MD-BP-WS , Web Service for Business Partner , Problem