This error occurs when FedEx temporarily fails to respond during label generation due to a carrier timeout or outage. It is not caused by a problem with your shipment data.
Error message
"The request could not be completed because an internal timeout was exceeded."
What this means
FedEx did not respond in time when the label was requested. This is usually caused by a temporary carrier outage or slowdown.
How to fix it
Wait a few minutes.
Retry generating the label.
If the issue continues, try again later or switch to another carrier temporarily.
If the issue continues
Contact support with the RMA ID. Support can check whether there is an active FedEx issue.