upsdude said:
Couple years ago I ordered some parts and the shipper emailed me a tracking number. UPS.com only showed “Billing Information Received” for several days. I called them and raised *ell. They swore the parts had been shipped. The package arrived several days later never showing any other scans. I tracked it again the day after delivery, the Billing Info scan and delivery scan were the only detail listed.
That sounds like a missed origin scan. The derived (or "logical" or "virtual") scans rely on that physical (or "real" or "actual") scan as the package is loaded into a trailer, (container, masher, smalls bag,) etc. If that origin scan is missed, the package will not get the derived scans as the trailer progresses. Air Smalls have a lot of chances to be missed along the way - if the package does not get scanned into the smalls bag, or if the smalls bag does not get scanned into the air container, or if the air container....
I will stop there. If the container does not get scanned into the tail number, there is going to be a weight and balance error.
Some big shippers - those who load directly into trailers, smalls bags and/or air containers - are notoriously bad about getting everything scanned accurately, and upload of their scanning info is sometimes delayed.
UPS workforce-reduced me from TSG earlier this year, so now my main use of this knowledge is as a consignee.