One, most likely it's variable rate as in "Libor + so and so." Which means that if, for whatever reason, LIBOR goes up a lot, you are screwed.
But they can't print foreign currency.
en.wikipedia.org/wiki/1997_Asia…
"India’s sovereign external debt to GDP is among the lowest globally at less than 5%. The Government would start raising a part of its gross borrowing programme in external markets in external currencies."
It's the kind of mistake that kill people all the time...
But this temptation to borrow in forex is so strong because of low current cost, and ease of availability thanks to low foreign Debt/GDP ratio.
As Manish says, this is how it starts...