Sir,
Please refer the following para of Chapter 4 regarding Duty exemption under the Foreign Trade Hand Book of Procedure (RE - 2012) / 2009-14 (From 5-6-2012)
4.22 Export Obligation (EO) Period and its Extension
(a) Fulfilment Period of EO under an Advance Authorisation shall commence from Authorisation issue date, unless otherwise specified. EO shall be fulfilled within 18 months except in case of supplies to projects / turnkey projects in India / abroad under deemed exports category where EO must be fulfilled during contracted duration.
(b)RA may consider a re,,
quest of Advance Authorisation holder for one extension of EO upto six months from the EO expiry date subject to payment of composition fee of 0.5% of the shortfall in EO.