(1) A case number or unique identifier is to be assigned to a notice under this Division when it is accepted for filing.
(2) In the case of a notice for an estate in respect of which--(a) proceedings for the grant of probate or administration have been commenced, or(b) some other notice has been filed under this Division, or(c) a caveat has been filed under Division 10,the case number or other unique identifier is to be the same as that previously assigned to the proceedings, notice or caveat.