# CF400

Source: https://xmlvalid.com/rules/CF400

> E-mail address maximum length is 320 characters - the …'s has ….

- 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: `string-length($email) le 320`

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