Why is it required to immediately add a shipment with a tracking number? Immediately add the shipment with the tracking number from the online store in your personal account. Otherwise it will fall into the "unrecognized" category at the foreign warehouse. It will take more time to process such a shipment, accordingly, the delivery time will increase. The tracking number is the identifier of your shipment. It should not contain hyphens, dashes, or other special characters. It usually looks like this: 9405509699938860829083. In addition to numbers, it may contain one or more letters: TBA094490876000. It is important no to confuse the tracking number with the order number, which looks like this: ORDER #108-9223429-1685032 (Amazon) or like this: Item number 112122004175 (eBay).