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Then on December 2nd, 5 qty of items have been sold. As ACP at the invoice issuing time was 10 AED the system has deducted 50 AED from item stock:
Later on the 5 qty of items by the same price have been purchased and additional expense has occurred during the purchase so the AVG became 11 AED:
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: