17.—(1) Subject to paragraph (2), no person may, unless authorised by the Scottish Ministers, replace an identification mark applied or attached under this Order.
(2) A keeper must replace an identification mark if it has—
(a)become illegible;
(b)been removed for welfare reasons; or
(c)been lost.
(3) Any person replacing an identification mark must either—
(a)apply an identical identification mark; or
(b)apply a new identification mark and cross-refer the new identification mark with the original identification mark in the holding register.