Confused about DP ID and how it relates to your demat account? Understand what is BO ID in CDSL and how these identifiers work together to manage your securities holdings. This guide explains the structure of a DP ID, its role in identifying the depository participant, and how it combines with the BO ID to form your demat account number. Learn the basics of DP ID and BO ID in CDSL to better understand how demat accounts function in the stock market ecosystem.