In India from what i heard
ATR 42 is a separate type rating from ATR 72
Someone qualified on the ATR 72 is not eligible to fly as
co-pilot on the ATR42
Dont know if any differences course exist though
Since this is a rumor network
Heard on the Grapevine
This position was already known to the people with right connections long before the positions was advertised
Since Alliance Air is a govt company the post has to be advertised .
The people with right connections have already begun their or is about to complete their ATR42 type rating