Why are some UPI handles not shown on the Zerodha IPO window?

IPO bids can only be placed using UPI apps and handles of banks that support IPO applications. The list of apps and banks that support UPI IPO applications can be checked by visiting npci.org.in/what-we-do/ipo/live-partners. To learn more about applying for an IPO, see How to apply for an IPO, and how to stay informed of new ones?