3577702 - 'Tax code & also exists' is raised when creating supplier invoice with API_SUPPLIERINVOICE_PROCESS_SRV

Error message FF812  'Tax code & also exists'  is raised when creating supplier invoice with API_SUPPLIERINVOICE_PROCESS_SRV with delivery note reference.

SAP S/4HANA Cloud Public Edition

InboundDeliveryNote reference is filled in API_SUPPLIERINVOICE_PROCESS_SRV and invoice status is held.

System is not creating line items based on pure InboundDeliveryNote reference. 

For supplier invoice, to contain line items, the purchase order reference needs to be filled explicitly with node to_SuplrInvcItemPurOrdRef. This is standard system behaviour. 

Operations for Supplier Invoice

API_SUPPLIERINVOICE_PROCESS_SRV, Delivery note, Purchase order reference, Supplier Invoice, Supplier invoice line item, Tax code, FF812, Error message, InboundDeliveryNote, to_SuplrInvcItemPurOrdRef , KBA , MM-FIO-IV-2CL , Fiori UI for Invoice Verification (Public Cloud) , Problem