I visited a BSNL CSC yesterday and they tried to do the recharge for Rs 1499 and it gave an error saying, 'The Recharge could not be processed right now, try again later.' Even they were not sure why it showed an error. In their internal portal for recharges, the 1499 3G Data Plan is present, and they showed it to me, but the recharge still failed.
I called customer care (1503) and they said you just need to do a easy recharge for 1499 at any BSNL Franchise, ie any local recharge shops. So I went to a shop and tried today, again the same issue.
In the online portal the 1499 option is not yet updated for Chennai circle so I can't do it online. So someone who has done it from a CSC / Local Recharge shop, please let me know exactly how to do it.