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UBL-SR-07

Missing in the preceding invoice reference: preceding invoice reference (BT-25)

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

What the message means

Missing in the preceding invoice reference: preceding invoice reference (BT-25).

What the issuer needs to change

Add the preceding invoice reference.

Fields concerned

BT-25 preceding invoice reference

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Origin

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

Original rule text

If there is a preceding invoice reference, the preceding invoice number shall be present

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

Technical details for IT

UBL

Context: cac:BillingReference
Test: not((cac:InvoiceDocumentReference/cbc:ID))

Related rules

UBL-DT-01An amount has more than two decimals
UBL-DT-06An attachment has no file type (MIME code)
UBL-DT-07An attachment has no file name
UBL-SR-42The seller has more than two tax entries (PartyTaxScheme)
UBL-SR-43A document reference has an identifier scheme although it is not an invoiced object (document type 130 or 50)
UBL-SR-44Different remittance information values (BT-83) are given

All validation rules

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