# BT-123 — Supporting document description

> https://billhorse.com/en/terms/bt-123/

Short description of the attachment (e.g. "June timesheet") so recipients can classify the document without opening it.

## Where does it live in the XML?

- UBL: `cac:AdditionalDocumentReference/cbc:DocumentDescription`
- CII: `ram:AdditionalReferencedDocument/ram:Name`