To determine this you need to understand the voltage drop in the wiring between the LED driver and the LED module. Too much voltage drop can reduce the light output from the LED system. The acceptable distance is determined by the load and the conductor size. With Constant Voltage applications you are limited since the voltage is normally fixed at either 12V or 24V and with a significant drop in voltage you may visually be able to see the difference in light output.
With Constant Current drivers there is far more flexibility since the driver will automatically supply more voltage in order to provide the necessary current. The exception to this is if the LED module was already using the entire output voltage capability of the driver in which case the distance would be limited in a similar way to the Constant Voltage drivers.