XV-MY-24
The contact number of the supplier and of the buyer (cac:Contact/cbc:Telephone) is mandatory, NA where LHDN allows it; the … has none.
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:PartyTest
$phone ne ''Checked with MyInvois e-Invoice