For a storefront that needs to open
If a customer door will not unlock or latch reliably, describe what happens during opening and closing. Mention the door material, the affected handle and whether the building owner controls the hardware. For an occupied shop, agree on a practical time to inspect the entrance and who can approve the work. A key change after a staff handover is a different request from repairing a door that will not shut.
Compare commercial locksmith work, rekeying and lock repair.