(1) A paper-based supply authority is cancelled by a person if the person—
(a) marks the word ‘cancelled', and the person's name and business address, on the front of the supply authority; and
(b) signs and dates the cancellation of the supply authority.
(2) An electronic supply authority is cancelled by a person if the person—
(a) marks the word ‘cancelled' on the supply authority; and
(b) links an electronic document to the supply authority that includes the person's name and business address and signature.