NordInvoice / EN 16931 / BT-139
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BT-139Invoice line allowance reason
BT-139 (Invoice line allowance reason) 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.
Reason for the line discount.
Browse the interactive EN 16931 mapper Check your invoice in the free validator