Reference
Markdown exportBT-25 Preceding invoice reference
Reference to an earlier invoice that this invoice corrects, supplements, or continues.
Quick answer
Invoice basics
Core document identifiers, dates, process identifiers, and high-level invoice context.
Quick actions
In plain language
This field is important for credit notes, corrections, and chains of invoices such as partial or final invoicing.
What you usually enter here
Referenced invoice number
Typical valid values include: INV-2025-991
Optional according to EN 16931-1, but required by the business scenario when the invoice refers back to another invoice.
Where the field sits
- Invoice
- cac:BillingReference
- cac:InvoiceDocumentReference
- cbc:IDBT-25
- rsm:CrossIndustryInvoice
- rsm:SupplyChainTradeTransaction
- ram:ApplicableHeaderTradeSettlement
- ram:InvoiceReferencedDocument
- ram:IssuerAssignedIDBT-25
What goes wrong often
Avoid values like: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Valid Examples
- INV-2025-991
Invalid Examples
- AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
XML mapping and field facts
Open the technical reference if you need XML paths, validator rule codes, legal wording, or schema-specific mapping details.
Field ID:
BT-25
Data Type:
text
Cardinality:
0..1
Requirement:
Optional
Max Length:
50 characters
XML Implementation
/Invoice/cac:BillingReference/cac:InvoiceDocumentReference/cbc:ID/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeSettlement/ram:InvoiceReferencedDocument/ram:IssuerAssignedIDNext step
Create an XRechnung from your PDF
The converter reads the invoice and shows the fields it found before download, so you can check and correct the values. No PDF? Fill in the XRechnung directly in the form.
Trying it and buying a single conversion work without an account. Subscriptions from €10/month with annual billing (excl. taxes), or €5 per conversion (excl. taxes) without a subscription.