For AEO-T1 and AEO-T2 entities, the validity of AEO certification is 3 years whereas, for AEO-T3 and AEO-LO entities, the validity period is 5 years. However, from 1st August 2019, CBIC has done away with the renewal requirements of AEO certification for T1 entities. From 1st August 2021, all the entities certified on or after 1st April, 2019 shall get auto-renewed without any end date by the system.