FinCEN BOI FAQ M.6
Is there any way to deactivate an individual’s FinCEN identifier that is no longer in use so that the individual no longer has to update the information associated with it?
Cite as FinCEN Beneficial Ownership Information FAQ M.6 (FinCEN Identifier)
FinCEN is actively assessing options to allow individuals to deactivate a FinCEN identifier so that they do not need to update the underlying personal information on an ongoing basis. FinCEN will provide additional guidance on this functionality upon completion of that process.