FedEx Meter Number is used by FedEx to calculate your rates and track your rate requests. The front-line of FedEx support is not familiar with this system, so calling FedEx support might be frustrating as they'll probably say something to the effect of "FedEx does not support Meter Numbers".FedEx actually does still support Meter
Numbers and generates them automatically.
To get a Meter Number for your account, sign up here:
FedEx will then send you an email acknowledging your registration. Follow the link and login to their developer site, then proceed to here:
to get your test password and key. Then go here:
to get your production key.