XV-MY-23
An address needs the city (cbc:CityName), the state (cbc:CountrySubentityCode) and the country (cac:Country/cbc:IdentificationCode), unless its first line is NA; the …'s lacks one.
error: the document is invalid
What the rule checks
As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.
Context
/*/cac:AccountingSupplierParty/cac:Party | /*/cac:AccountingCustomerParty/cac:Party
Test
$na or ($city ne '' and $state ne '' and $country ne '')
Checked with MyInvois e-Invoice