@ sweetie
1- by DSSC in pak-army you must have 16 years of education.
2- after 16 years of education --- u are screened out twice by either ISSB/Inter Service Selection board.... mean that you have exhausted your two chances.

Now, you cannot apply for commission in armed forces of Pakistan. But dont loose heart bro. We have our own paths to choose and go in life but 'Nature has its own mysterious ways'......... ALLAH subhana wa'tallah jo kerte hein hamare haq mein ... usee mein behtaree hoti he.

you have cleared ISSB means that you have the potential to go up in life. .....hard work and pray....... pays back.
wish you best of luck in life ahead.

best regards,
Noman !