If you receive an "UNEXPECTED_EXCEPTION" error while trying to print labels, it’s typically due to one of the following reasons.
Cause 1: Carrier API under high load
This error can occur when the carrier’s API is experiencing high traffic or temporary instability.
What to do:
Wait a few minutes
Try printing the labels again
Cause 2: Missing Package on an order
The error may also occur if one or more orders do not have a Package assigned.
What to do:
Review the orders you’re trying to print labels for
Identify any orders without a Package assigned
Assign a Package to those orders
Retry printing your labels
Why a Package might be missing
In some cases, a Package may not be assigned due to:
A delay during order import
A temporary connectivity issue
You have removed it
Still not working?
If all orders have Packages assigned and you’re still seeing the error, wait a few minutes and try again.