Hello,

yes there are restrictions. 1st is age:- has to apply between 17 to 21 and half years.

You have to join in Indian Army first to join in special force. You have to be  100% physically fit and have to qualify written test and medical test.

so do apply if you want to join with in the eligibility age and practice to qualify the test.

for more details, please refer to the link :- https://joinindianarmy.nic.in/writereaddata/Portal/Images/pdf/Recruitment_Procedure_for_PARA_and_PARa_(SF).pdf

Hope it helps!