| Shipping Label Created, USPS Awaiting Item | A label exists; USPS has not confirmed possession | Pre-handoff | Short: wait; long dwell: check warehouse and consolidator first |
| Accepted / USPS in Possession of Item | USPS scanned and accepted the item | Acceptance | Sellers: log the first carrier scan time |
| Shipment Received, Package Acceptance Pending | Batch manifest received; per-piece scan pending | Bulk drop-off | Wait for the piece scan; long gap suggests a missed scan |
| Arrived at USPS (Regional) Facility | Reached a processing or distribution node | Network processing | Normal; wait |
| Departed USPS (Regional) Facility | Left the node for the next one | In transit between nodes | Normal; only watch if nothing follows |
| Moving Through Network / In Transit to Next Facility | System believes the item is moving (may be a derived update) | In transit | Wait; not proof of a physical scan |
| In Transit, Arriving On Time / Late | System timing estimate; Late just means possibly delayed | Transit timing | A day or two late is common; investigate only on a long silence |
| Arrived at USPS Regional Destination Facility | Reached the destination-area center; close to delivery | Destination processing | Delivery is near; wait for the next event |
| Arrived at Post Office / Arrival at Unit | At the post office serving the address | Last-mile origin | Delivery today or next business day |
| Out for Delivery | On today's route; same-day delivery not guaranteed | Final mile | Watch for the follow-up; check for Notice Left if silent |
| Delivery Attempted / Notice Left | Attempt failed, notice left, package held | Delivery exception | Pick up per the notice or schedule redelivery |
| Delivered, In/At Mailbox / Front Door / Parcel Locker / Left with Individual | Delivered, with the location recorded | Delivered | Check the recorded spot; escalate only if truly missing |
| Delivered to Agent for Final Delivery | Left with an agent for final delivery; agent is not the recipient | Agent handoff | Ask the property office, front desk, or mailroom first |
| Available for Pickup / Held at Post Office | Package held at the post office for pickup | Pickup | Pick up with notice/ID; mind the hold period |
| Insufficient Address | Address incomplete; possibly one correction chance | Address exception | Provide the missing info or it returns |
| No Such Number / Addressee Unknown / Vacant | Address or recipient cannot be verified | Address exception | Verify the order address; fix upstream data |
| Forwarded / Unable to Forward | Redirected / cannot redirect, returning | Forwarding | Expect delivery to the new address or a return |
| Refused / Unclaimed | Declined or never picked up | Pre-return | Handle as a return; do not reship to the same address |
| Return to Sender | Package is traveling back | Return leg | Read the cause and coordinate with the sender |
| Missent | Sorted the wrong way; being rerouted | Misrouting | No action; usually adds a day or two |
| Intercepted | An intercept request is in progress (fee, not guaranteed) | Intercept | Follow the intercept outcome and new destination |
| Processing / Weather / Transportation Delay | Temporary processing or transport delay | Delay | Usually resolves; check if it stretches for days |
| Tracking Not Available | No record found; see the troubleshooting section | Data layer | Check the number and timing; do not confuse with Label Created |