You must never reuse a Canadiana number in a field 016 $a, if it’s already been attributed, even if it was previously attributed to an authority record that has since been deleted. If a Canadiana number has been reused by mistake, a new one should be assigned (see Question 2).
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You must never reuse a Canadiana number in a field 016 $a, if it's already been attributed, even if it was previously attributed to an authority record that has since been deleted. If a Canadiana number has been reused by mistake, a new one should be assigned (see Question 2).
== What should I do if the same Canadiana number appears in two separate authority records? ==
== What should I do if the same Canadiana number appears in two separate authority records? ==