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But as on the time of Sales Invoice posting the opening ACP (on the beginning of the month) has been deducted from the stock, the system is making the equation during month end closing and deducting the actual item cost for this sale. It's taking all stock balance during the month and calculates ACP, i.e. Total qty=10+5=15, total balance = 100+50+10 = 160 ED. ACP = 10,66666667 AED.
As during the sales document posting only 50 AED (10 AED per item) was deducted, the system should equalise this cost, i.e. Cost correction = (10,66666667*5) - 50 = 3,333333 AED:
