As a retail client - the leverage must always be left at 500:1 - ASIC retail clients have fixed leverage based on the ASIC product intervention rules.
We calculate that leverage per symbol, not based solely on the account leverage, but we need to leave the account leverage at 500:1 so that the leverage per symbol is not miscalculated.
Please explain to the client that their leverage is not 500:1, but will be based on those ASIC leverage rules for retail clients, and that we can't change the account leverage setting for him.