Reactivating existing account
In case you do not trade for six months or more, then, your trading account status turns dormant. To reactivate the same you need to send us the reactivation request form along with the latest bank statements of the last six months.
Bank statements need to be self attested. https://upstox.com/files/AccountReactivation.pdf
Upon receiving the reactivation request form and the relevant bank statements, your account will be activated within 24-48 hours upon confirmation of receipt.