BT-42 — Seller contact telephone number

field4 rules

Every EN 16931, Peppol and XRechnung rule that constrains BT-42. 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-DE-27	warning	In BT-42 sollen mindestens drei Ziffern enthalten sein.
BR-DE-6	fatal	Das Element "Seller contact telephone number" (BT-42) muss übermittelt werden.
DE-R-006	fatal	The element "Seller contact telephone number" (BT-42) shall be provided.
DE-R-027	warning	"Seller contact telephone number" (BT-42) should contain a valid telephone number. A valid telephone should consist of 3 digits minimum.

All rules

Check an invoice against every BT-42 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.