# BT-3 — Invoice type code

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

Functional document type per UNTDID 1001. In practice mostly 380 (invoice), 381 (credit note), 384 (correction) and 326 (partial invoice).

## Where does it live in the XML?

- UBL: `cbc:InvoiceTypeCode`
- CII: `rsm:ExchangedDocument/ram:TypeCode`

## Checked by these rules

- [BR-04 — Invoice type code missing](https://billhorse.com/en/rules/br-04/)
- [BH-TYPE-01 — Unusual invoice type code](https://billhorse.com/en/rules/bh-type-01/)