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BR-DEX-09

The amount due (BT-115) is wrong: it must be the total with VAT (BT-112) minus the amount paid (BT-113) plus rounding (BT-114) plus …

Validation rule of XRechnung 3.0.2 (KoSIT, Schematron 2.6.0) · Level: Error

What the message means

The amount due (BT-115) is wrong: it must be the total with VAT (BT-112) minus the amount paid (BT-113) plus rounding (BT-114) plus third-party payments (BT-DEX-002).

What the issuer needs to change

Have the amount due recalculated.

Fields concerned

Your invoice reports BR-DEX-09? Check it with SmartFormular E-Rechnung lite, free to try until 31 December 2026: the tool shows every finding with an explanation, the invoice in readable form and a GiroCode to pay – in your browser, no upload.

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Origin

Rule set
XRechnung 3.0.2 (KoSIT, Schematron 2.6.0)
Syntax
UBL
Level
Error

Original rule text

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

Source: KoSIT, XRechnung Schematron 2.6.0, Apache License 2.0

Technical details for IT

UBL

Context: cac:LegalMonetaryTotal[$isExtension]
Test: not((round((xs:decimal(cbc:PayableAmount) - $payableroundingamount) * 10 * 10) div 100) = (round((xs:decimal(cbc:TaxInclusiveAmount) - $prepaidamount + $thirdpartyprepaidamount) * 10 * 10) div 100))

Related rules

All validation rules

Technical explanation by robin.vision, not tax or legal advice. Rules as of 31 August 2026 (KoSIT validator configuration).