BT-57

Buyer contact telephone number

BT-57 (Buyer contact telephone number) is a business term of EN 16931, the European e-invoicing standard. This page shows where the field lives in a UBL invoice, how often it may appear and which validation rules check it.

Phone number at the buyer.

Group: BG-9 (Buyer contact)

Cardinality: 0..1

UBL element: ...cac:Contact/cbc:Telephone

Example value: +49 30 987 654

Browse the interactive EN 16931 mapper Check your invoice in the free validator