# FX-SCH-A-000200

Source: https://xmlvalid.com/rules/FX-SCH-A-000200

> Each Invoice line (BG-25) shall have an Invoice line identifier (BT-126).

- Level: error
- Rule sets: Factur-X BASIC rules 1.09
- Context: `//ram:IncludedSupplyChainTradeLineItem`
- Test: `(ram:AssociatedDocumentLineDocument/ram:LineID!='')`

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