Is VPA mandatory for every UPI app?

Yes, a Virtual Payment Address (VPA), also known as a UPI ID, is essential for transacting on any UPI application. When you register for a UPI service, the app provides you with a unique VPA. This unique identifier is used for making and receiving payments, ensuring secure and seamless transactions within that specific app. If you use multiple UPI payment services, you will have a VPA for each.