If the shares being sold were transferred from another DP, for example:
(shares received as a gift from a Resident Indian or your entire portfolio was migrated from another DP. In such a case the details required for calculating TDS will not be available with ICICIdirect.)
You will be required to furnish below documentary proof and send a soft copy to email@example.com
Demat holding statement of the DP from where the shares have been transferred to your ICICI Bank DP. This is to ascertain the period of holding to apply LTCG or STCG. The demat statement should also have the repatriation proof details for cases where pay-out is to be given in NRE account.
Cost of acquisition (COA) details of the shares being sold like contract notes. If the COA details are not available with you, ICICIdirect can consider Fair Market Value (FMV) as on Jan 31, 2018 given that shares were purchased prior to that period and documentary proof of period of holding is submitted.