CustomFee

A transfer fee to assess during a CryptoTransfer that transfers units of the token to which the fee is attached. A custom fee may be either fixed or fractional, and must specify a fee collector account to receive the assessed fees. Only positive fees may be assessed.

Field	Type	Description
one of fee {
fixed_fee	FixedFee	Fixed fee to be charged
fractional_fee	FractionalFee	Fractional fee to be charged
royalty_fee	RoyaltyFee	Royalty fee to be charged
}
fee_collector_account_id	AccountID	The account to receive the custom fee