A delivery was attempted or interrupted, or the package hit a problem. The detail line matters more than the status: "receiver not available", "address correction needed", "damage reported"…
Why packages get stuck here
Address incomplete (suite/apartment numbers are the classic)
Signature required, nobody home
Weather or emergency holds
Package damaged in the network
How long it usually lasts: Hours to days depending on cause.
What to actually do
Read the exception detail — each one has a different fix
Fix addresses via My Choice or the 800 line
Damage exceptions: photograph everything once it arrives; claims want photos + packaging