80g contibution for sikkim releif fund

Hi,

I have donted some amount under Sikkim releif fund 80G through my company. I have received certification from my company that amount is 100% income tax free. When i am filling the income tax return in scheduled 80G at that time its madatory to fillup below details

Name of donee, Adress City or Town or District, State Code, PinCode
PAN of Donee, Amount of donation ,Eligible Amount of Donation

But i dont know Pincode and PAN of Donee so how would i fill up the ITR now.

Many Thanks in advances!!

Thanks and regards

Manoj Kumar