# CF408

Source: https://xmlvalid.com/rules/CF408

> Phone Number Minimum length is 8 characters - ….

- Level: error
- Rule sets: MyInvois validations of LHDN (Malaysia) MyInvois SDK of 25 September 2026
- Context: `/*/cac:AccountingSupplierParty/cac:Party | /*/cac:AccountingCustomerParty/cac:Party`
- Test: `$phone = ('', 'NA') or string-length($phone) ge 8`

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