If you are receiving the following error (Unable to Upload LetterHead or Signature:Notification no. 0 Severity: ERROR Code: 1000 Message: Authentication Failed Source: prof) this means that ETD has not been enabled on your FedEx account. Please speak with FedEx to get the ETD feature enabled then continue uploading your letterhead and signatures.
Uploading letterheads and signatures to FedEx
Certain countries will need a signature file and letterhead file to be uploaded and applied to the Commercial Invoice. Without this, you will not get a label back if trying to ship to selected counties. To upload this please do the following:
Click Connect then Courier Integrations.
Next, click FedEx.
Click Upload Signatures.
The maximum size of each image can only be 700 pixels wide by 50 pixels tall.
Then upload each file.