If you encounter a message like the one below on an Inventory Status report, it indicates a discrepancy between the On Hand quantity and the associated Serial Numbers.

Please follow the steps below to resolve the issue. 

1. Set the Inventory to Non Serialized in the Details tab and Save
2. Do an Inventory Adjustment to bring the On Hand to 0
3. Set the Inventory back to Serialized
4. Do another Inventory Adjustment to set the On Hand quantity to the correct quantity