SEBI mandated all Demat account holders and Mutual funds investors to update nominee details in their respective accounts before this 30th September 2023. Otherwise such accounts will be frozen for debits.
Initial deadline for the nominee updation was 31st March 2023, but it was further extended to 30th September 2023.
If anyone submitted earlier, then no need to submit them again. Otherwise, make sure to submit the nomination before this deadline.