Hi Sagar,
Please have a look at your private messages on
transfex.net,
I explained the (temporary) rejection there. I apologize for
any inconvenience this may have caused.
In short:
You requested the "Nepali (Nepal)" language team, which has the
language code "ne_NP". Since we traditionally use the main
locale code without the country code (only "ne"), I asked you
to re-request the appropriate language team ("Nepali").
Unfortunately Transifex doesn't allow us to restrict the
available language codes without running our own instance.
Let me know if I can help somehow,
Jannis