Huf date of incorporation 01/01/9999

i have one HUF registered PAN CARD ON efilling site showing date of incorporaton of 01/01/9999

when i am filling the relvant form date of incorporation 01/01/9999 declined with message date of birth format not valid.

how to valid the date of incorporation with the income tax data base

please advise the how to generate xml file with validating date of incorporation

DINESH JOOTHAWAT

CHARTERED ACCOUTANT

CELL NO 9323049764

EMAIL joothawatdc @ hotmail.com