What does "1000 - Authentication failed" mean when I try to print a Fedex label?

The above error message is displayed when the FedEx account information entered into any of the following fields is invalid.

Account Number:

Meter Number:

Web Service Authentication Key:

Web Service Password:

Web Service Version:

The error message can be triggered by an incorrect password or a single letter of the Authentication key being misplaced. If you get this error message, you will need to confirm the information you have entered with that provided to you by FedEx.