BT-157 — Item standard identifier

field1 rules

Every EN 16931, Peppol and XRechnung rule that constrains BT-157. 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-64

fatal

The Item standard identifier (BT-157) shall have a Scheme identifier.

All rules

Check an invoice against every BT-157 rule

…or paste the XML instead

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.