Documente-vanzare (29)AddSaleInvoiceExtendedAddSaleInvoiceExtended POST /api/rpc/AddSaleInvoiceExtended Metoda permite adaugarea unei facturi de vanzare cu linii si campuri suplimentare. Request Responses200401502NextUp response envelope (check Result + Error).Missing or invalid token.Proxy/upstream failure (target NextUp unreachable).