3094948 - Error "Cannot produce target element" when replicating Business Partner Relationship from SAP Cloud for Customer to SAP Marketing Cloud

When replicating business partner relationships from C4C to Marketing Cloud via iflow "Replicate Business Partner Relationship to SAP Marketing via Business Partner Web Services", you see the following error in the SAP Cloud Platform Integration message monitoring:

"Cannot produce target element /ns0:BusinessPartnerRelationshipSUITEBulkReplicateRequest/BusinessPartnerRelationshipSUITEReplicateRequestMessage. Queue has not enough values in context. Target xsd requires a value for this element, but target field mapping does not produce one. Probably the xml-instance is not valid to the source xsd, or the target field mapping does not fulfill the requirement of the target xsd".