# BG-3 — Preceding invoice reference

> https://billhorse.com/en/terms/bg-3/

Points to an earlier invoice the current document relates to — typical for credit notes and corrective invoices. Only needed when such a relation exists.

## Where does it live in the XML?

- UBL: `cac:BillingReference/cac:InvoiceDocumentReference`
- CII: `ram:InvoiceReferencedDocument`

## Contained fields

- [BT-25 — Preceding invoice reference](https://billhorse.com/en/terms/bt-25/)
- [BT-26 — Preceding invoice issue date](https://billhorse.com/en/terms/bt-26/)