The minimum Top-up is the amount you need to sum up for the selected transaction. Eg; your wallet balance left with RM20.00 however the transaction amount is RM50.00. Thus, you need to top-up at least RM30.00.
The maximum you can Top-up is up to RM500.00 in your Setel wallet. Eg; your wallet balance left with RM20.00, you may top-up up to RM480.00 only.