Solution : https://service.sap.com/sap/support/notes/385473 (SAP Service marketplace login required)
Key words :
additional key words knref, system displays message vl034, error message vl034, mandatory partner function, mandatory partner functions, attached advance correction, customer master record, knvp-knref, customer master, business partner
Related Notes :
524145 | Delivery split for missing mandatory partner forwarding agnt |
448919 | Delivery split concerning partner data works incorrectly |