This endpoint allows you to update the settings for your specific shipper account. Only applies to FedEx currently.
Shipper account id
Content-Type
Update a shipper account's settings
Set to true to enable FedEx Electronic Trade Documents (ETD), provide both commercial_invoice_letterhead and commercial_invoice_signature are required. Otherwise ETD is disabled and any provided image fields are ignored.
Letterhead image to generate courier's electronic commercial invoice. Only Base64-encoded PNG images are supported, the max resolution is 700 pixels wide by 50 pixels long.
Signature image to generate courier's electronic commercial invoice. Only Base64-encoded PNG images are supported, the max resolution is 240 pixels wide by 25 pixels long.