Two records for one device can send service history in different directions. The problem is easy to create when a department uses a local spreadsheet and another team maintains the main inventory. Merging records carefully is more useful than simply deleting the apparent duplicate.
Confirm that the devices really match
Compare serial numbers, models and facility asset identifiers. Similar names or room locations are not enough. Ask the inventory owner to investigate conflicting information against the equipment itself. Keep the records separate while identity remains uncertain. A device replacement in the same room may explain the difference, and combining those records would attach old service work to the wrong equipment.
Preserve the links people already use
Once the owner confirms a duplicate, choose the master record through the approved process. Retain the previous identifier as a searchable reference and move associated documents without discarding their original dates. Check open service requests and department lists for the retired record. Tell the affected teams which identifier to use so the same duplicate is not recreated during the next import.
Practical takeaway
Treat a duplicate as an identity question first and a cleanup task second. Preserve the service trail when the records are reconciled.