Article 20 — Consent to registration
1. An international interest, a prospective international interest or an assignment or prospective assignment of an international interest may be registered, and any such registration amended or extended prior to its expiry, by either party with the consent in writing of the other.
2. The subordination of an international interest to another international interest may be registered by or with the consent in writing at any time of the person whose interest has been subordinated.
3. A registration may be discharged by or with the consent in writing of the party in whose favour it was made.
4. The acquisition of an international interest by legal or contractual subrogation may be registered by the subrogee.
5. A registrable non-consensual right or interest may be registered by the holder thereof.
6. A notice of a national interest may be registered by the holder thereof.