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BR-CO-03

Both the VAT point date (BT-7) and the VAT point date code (BT-8) are given; only one is allowed

Validation rule of EN 16931 (CEN, rule set 1.3.16) · Level: Error

What the message means

Both the VAT point date (BT-7) and the VAT point date code (BT-8) are given; only one is allowed.

What the issuer needs to change

Leave out one of them.

Fields concerned

BT-7 VAT point date
BT-8 VAT point date code

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Origin

Rule set: EN 16931 (CEN, rule set 1.3.16)
Syntax: CII, UBL
Level: Error

Original rule text

Value added tax point date (BT-7) and Value added tax point date code (BT-8) are mutually exclusive.

Source: CEN/TC 434, EN 16931 validation rules 1.3.16, European Union Public Licence 1.2

Technical details for IT

UBL

Context: /ubl:Invoice | /cn:CreditNote
Test: not((exists(cbc:TaxPointDate) and not(cac:InvoicePeriod/cbc:DescriptionCode)) or (not(cbc:TaxPointDate) and exists(cac:InvoicePeriod/cbc:DescriptionCode)) or (not(cbc:TaxPointDate) and not(cac:InvoicePeriod/cbc:DescriptionCode)))

CII

Context: //ram:ApplicableHeaderTradeSettlement/ram:ApplicableTradeTax
Test: not(((//ram:TaxPointDate) and not(//ram:DueDateTypeCode)) or (not (//ram:TaxPointDate) and (//ram:DueDateTypeCode)) or (not (//ram:TaxPointDate) and not (//ram:DueDateTypeCode)))

Related rules

BR-CO-04In at least one invoice line, this is missing: invoiced item VAT category code (BT-151)
BR-CO-05The reason code and text of an allowance do not match (BT-97, BT-98)
BR-CO-06The reason code and text of a charge do not match (BT-104, BT-105)

All validation rules

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