BT-89

Mandate reference identifier

BT-89 (Mandate reference identifier) 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.

SEPA direct debit mandate reference.

Group: BG-19 (Direct debit)

Cardinality: 0..1

UBL element: cac:PaymentMeans/cac:PaymentMandate/cbc:ID

Example value: MANDATE-2026-1

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