Access Database needing error fixing

Description

My organization has an oldish access database we use as a booking system for our business.We are getting the odd runtime error accessing certain fields and so need this optimised/repaired so the DB works seamlessly.
it should be a pretty quick task and I can provide a copy of the DB to test before making changes to the live one if needed.
The database and all of its information will remain the property of my organization and it does contain some important confidential detail so an NDA may be needed if you needed full offline access to it.
Looking to start asap.