overvoltage on charger/controller

robocop

using  4kw  power inverter with a 60a with bms16s 250a on 3.2v lipo battery pack.
when the screen gives soc 100%  the controller will give a faulty light and tone.
and  controller says overvoltage of batteries.
like to know how to change settings in controller  or BMS to fix that.
Awaiting your reply
Bob