Answer:
72 hours, 12months
Step-by-step explanation:
When a user gets locked out of his/her account, it is usually investigated within 72 hours of the complaint being laid. that is 3days.
When the reason is found and and told to the user, the reason is documented and kept for 12 months within which time if there is any need for reference, the document can be easily retrieved and gone through.
Cheers.