How to Review and Adjust the Cart Before checkout, compare each cart line with the merchandise in front of you. Confirm item name, quantity, price, serial or IMEI, discount, and tax. Remove an incorrect line and add the correct one. Use the intended editing controls for quantity or price when your permissions allow. Confirm the subtotal, discounts, tax, surcharge when applicable, and amount due. For serialized items, a quantity and serial mismatch must be corrected before payment.