Hi Fong,
In Adagio Inventory, from the Edit menu and Item Maintenance, pick Sales History. Type into the item number field one of the codes that are giving an error.
There are statistical fields for Qty of Lost Sales YTD and Qty of Lost Sales LY, and neither should be below zero. Because they are simply statistical, the Data Integrity Check can't fix the values as there is nothing to compare and determine what the correct value should be. From this screen is how you can correct this manually.
If you don't use these Lost Sales quantities for anything, they could be edited to zero and that would make the errors you found go away.
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Regards,
Softrak Tech Support