# BR-CIUS-PT-66

Source: https://xmlvalid.com/rules/BR-CIUS-PT-66

> An Invoice shall at least have one Deliver to address group (BG-15).

- Level: error
- Rule sets: CIUS-PT rules (Portugal, UBL) 2.1.1
- Context: `//ubl:Invoice | //cn:CreditNote`
- Test: `exists(cac:Delivery/cac:DeliveryLocation/cac:Address)`

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