Add Funds To A Carrier
A monetary value, such as the price of a shipping label, the insured value of a package, or an account balance.
The currencies that are supported by ShipEngine are the ones that specified by ISO 4217: https://www.iso.org/iso-4217-currency-codes.html
The monetary amount, in the specified currency.
The request was a success.
The current balance of the requested carrier account