2670802 - eDocument Hungary - Invoices to Natural Person causing validation warning

Hungarian tax authority (NAV) returns the validation warning INCORRECT_HEAD_DATA_CUSTOMER_TAX_NUMBER, after submission for eDocuments based on invoices to customers without a Company Code.

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."

INCORRECT; HEAD; DATA; CUSTOMER; TAX; NUMBER; Tax ID; validation warning; error; NAV; Tax Authority Hungary; eDocument; HUINV; HU; Invoice Registration; Online Invoice; eInvoice; KNA1; Natural Person; BP; Business Partner; Customer; Master Data; Tax_Number; Tax Number; HUI; EDHUI; HU1; Company Code; Invoice; eDocument Cockpit; edoc_cockpit; FB01; FB70; FB75; FB05; F-29; Document; Credit; Debit; Clearing; Down Payment; Business Scenario , KBA , CA-GTF-CSC-EDO-HU , Document Compliance Hungary , Problem