A parameter of the device changes its value after the commissioning process.

ANSWER 

When setting a parameter, you could enter a value that, for the real device, is out of range or not admitted. If so, after the commissioning, that value is overwritten. For example, when creating your project, you set a tunable white colour device to power on at 500°K. Still, the real device of the installation has a temperature range going from 800°K to 6000°K, so the value you set in the Power ON Colour parameter (500°K) will be overwritten to 800°K, which is the minimum temperature value for that device.