The AMCS system did not record inner and outer limits for the trolley sensor.
Go to the sensor screen, and click on the “Gear” icon next to the trolley sensor
The top line of the should show the current position of the trolley.
Although you can set position 1 or 2 first, start with position 2 (the outer limit), so you can trolley back in and set the inner limit (position 1). Once you position the trolley at the outer limit, verify the distance and sensor value and click the checkmark box. Repeat for position 1 at the inner trolley limit