Hi,
The URL looks correct according to their website. Please contact FedEx to confirm.
Thank you,
Mediachase Software
What error do you get from FedEx gateway when calling GetRates method? We're using this url for testing: https://gatewaybeta.fedex.com/GatewayDC and it works perfectly.
Have you contacted FedEx tech support as Jason adviced you? They should be able to answer your questions about documentation.
Nadya.