# BT-40 — Seller country code

> https://billhorse.com/en/terms/bt-40/

Country of the seller's address as a two-letter ISO 3166-1 code (e.g. DE, FR). The only mandatory field of the seller address at EN 16931 level.

## Where does it live in the XML?

- UBL: `cac:AccountingSupplierParty/cac:Party/cac:PostalAddress/cac:Country/cbc:IdentificationCode`
- CII: `rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:SellerTradeParty/ram:PostalTradeAddress/ram:CountryID`

## Checked by these rules

- [BR-09 — Seller country missing](https://billhorse.com/en/rules/br-09/)