What we found
- The ERP exposed no interface of any kind. The vendor had closed years earlier.
- Orders were retyped from the shop into the ERP, and stock was retyped back the other way.
- Two people spent about half their day on the retyping, and mistakes surfaced at invoicing.
What we left
- A layer around the ERP reads its data model directly and exposes a clean interface.
- The shop, the warehouse and accounting now read the same numbers from one place.
- The ERP was never replaced. It is still the system of record.