A POA is a document that allows your broker to debit shares from your demat account and deliver them to the exchange. Zerodha is no longer collecting POA from you, as it has been replaced by Demat Debit and Pledge Instruction (DDPI) from 19 November 2022. Nothing changes for you if you have already submitted a POA.
Submitting DDPI is optional. You can also use the
CDSL TPIN to authorise the debit of securities.