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BR-DEX-09 - Amount due must include third party payments

Amount due for payment (BT-115) = Invoice total amount with VAT (BT-112) - Paid amount (BT-113) + Rounding amount (BT-114) + the sum of the Third party payment amount (BT-DEX-002).

BR-DEX-09 - Amount due must include third party payments

Amount due for payment (BT-115) = Invoice total amount with VAT (BT-112) - Paid amount (BT-113) + Rounding amount (BT-114) + the sum of the Third party payment amount (BT-DEX-002). This is an XRechnung rule (German KoSIT CIUS). It applies on top of EN 16931 and Peppol, and is mandatory for B2G invoicing in Germany.

CalculationsXRechnungBT-115 Error
This is an XRechnung rule (German KoSIT CIUS). It applies on top of EN 16931 and Peppol, and is mandatory for B2G invoicing in Germany.

What this rule checks

Amount due for payment (BT-115) = Invoice total amount with VAT (BT-112) - Paid amount (BT-113) + Rounding amount (BT-114) + the sum of the Third party payment amount (BT-DEX-002).

How to fix it

Recompute BT-115 including the sum of all BT-DEX-002 amounts.

Validate against this rule

This rule is part of EN 16931. Check your invoice with the validator that matches your format:

UBL / PeppolXRechnungFactur-X / ZUGFeRD

Related rules

BR-CO-10Sum of line net amounts must equal the line totalBR-CO-13Total without VAT must reconcile lines, allowances and chargesBR-CO-15Total with VAT must equal total without VAT plus VATBR-CO-16Amount due must equal total with VAT minus prepaidBR-CO-11Sum of document-level allowancesBR-CO-12Sum of document-level charges

Source: KoSIT XRechnung · Last verified: 2026-07-10

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