# BH-TYPE-01 — Unusual invoice type code

> https://billhorse.com/en/rules/bh-type-01/

## What does this error mean?

The type code (BT-3) is not among the common UNTDID 1001 invoice codes.

## How to fix it

Common: 380 (invoice), 381 (credit note), 384 (correction), 326 (partial). Exotic codes may be rejected by recipients.