# BR-NL-13

Source: https://xmlvalid.com/rules/BR-NL-13

> If an order line reference (BT-132) is used, there must be an order reference on the document level (BT-13)

- Level: error
- Rule sets: SI-UBL 2.0 rules (NLCIUS, UBL) 2.0.3.13, SI-UBL 2.0 G-account rules (NLCIUS, UBL) 1.0.2.13
- Context: `cac:OrderLineReference/cbc:LineID[$si]`
- Test: `exists(/*/cac:OrderReference/cbc:ID)`

> If an order line reference (BT-132) is used, there must be an order reference on the document level (BT-13)

- Level: error
- Rule sets: NLCIUS rules (CII) 1.0.3.13
- Context: `ram:BuyerOrderReferencedDocument/ram:LineID[$si]`
- Test: `exists(//ram:ApplicableHeaderTradeAgreement/ram:BuyerOrderReferencedDocument/ram:IssuerAssignedID)`

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