On a high rise building during maintenance, if a false fire alarm is triggered, is it necessary to evacuate workers or stop the evacuation process?

No need to evacuate the building ,,, 

Because first of all the maintenance team should inform all of the other departments about the maintenance of fire alarm system,, that if there will any alarm that will be false, so they will take it easy ,, and there will be no any problem and panic satiation .     

Thanks for the invite, I agree with answer zeeshan khan  

in analogue addressable system location and correct place will be shown so check that place immediately through intercom if it is a high rise building

there is also values shown in the panel through which we can find out also