After downloading a program update for a moment, a massive increase in the Inventory - cost, what is the defect?
You need to furnish much more information. Nobody could even begin to speculate about your situation.
I found what was wrong with some purchase invoices, after the update the program did not recognize their discounts. How do I solve the problem?
we need to see the problem first before suggesting solutions.
post relevant screenshots of the purchase invoice and its edit screen.
please temporarily change Manager language to English before taking screenshots.