Only 10 digit and 17 digit NID is accepted. If you have the old 13 digit NID, you should add your birthyear at the front of your NID to make it 17 digit.For example, if your 13 digit NID is 1917431000040 and your birthday (as on NID) is 01 January 1982, then your 17 digit NID is 19821917431000040.