21.2. A plan deposited in the office of the Minister shall, for each lot number(1) mention the name of the owner so long as the person responsible for introducing the plan can ascertain it;
(2) indicate, where required, the concordance between the former number and the new one;
(3) contain any other data the Minister may deem useful.
In cases determined by ministerial order, the data may be contained in a document attached to the plan.