231Need for registration

231 Need for registration The following items have no effect until a document that is in a form specified, or approved, by the Minister and that contains evidence of the item is registered in the petroleum register— (a) authorities; (b) variations, cancellations, suspensions, extensions, or the surrender of all or part of an authority or the conditions of an authority; (c) any part of an agreement that purports to create, transfer, assign, devolve or affect any interest in, or conferred by, an authority; (d) unit development agreements; (e) any other document that is required to be registered under section 232.