# FX-SCH-A-000018

Source: https://xmlvalid.com/rules/FX-SCH-A-000018

> The Seller postal address (BG-5) shall contain a Seller country code (BT-40).

- Level: error
- Rule sets: Factur-X MINIMUM rules 1.09, Factur-X BASIC rules 1.09
- Context: `/rsm:CrossIndustryInvoice`
- Test: `//ram:SellerTradeParty/ram:PostalTradeAddress/ram:CountryID!=''`

Validate a document against these rules: https://xmlvalid.com/validate