field4 rules
Every EN 16931, Peppol and XRechnung rule that constrains BT-47. If one of them fails, the others are usually worth a look — a wrong value in one field tends to break several checks at once.
| BR-AE-02 | fatal | An Invoice that contains an Invoice line (BG-25) where the Invoiced item VAT category code (BT-151) is "Reverse charge" shall contain the Seller VAT Identifier (BT-31), t… |
| BR-AE-03 | fatal | An Invoice that contains a Document level allowance (BG-20) where the Document level allowance VAT category code (BT-95) is "Reverse charge" shall contain the Seller VAT … |
| BR-AE-04 | fatal | An Invoice that contains a Document level charge (BG-21) where the Document level charge VAT category code (BT-102) is "Reverse charge" shall contain the Seller VAT Ident… |
| IS-R-004 | fatal | If seller and buyer are icelandic then the invoice shall contain the buyers icelandic legal identifier — Ef seljandi og kaupandi eru íslenskir þá skal reikningurinn innih… |
Nothing is stored, and the whole invoice is checked, not just this rule. A PDF only works if it is Factur-X / ZUGFeRD — a PDF with the invoice XML inside it.