# BR-CIUS-PT-23

Source: https://xmlvalid.com/rules/BR-CIUS-PT-23

> Each Deliver to address (BG-15) shall contain a Seller post code (BT-78).

- Level: error
- Rule sets: CIUS-PT rules (Portugal, UBL) 2.1.1
- Context: `cac:Delivery/cac:DeliveryLocation/cac:Address`
- Test: `exists(cbc:PostalZone)`

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