This looks like it could be very helpful. One question, how is it different than what was announced by the Reserve Bank of India earlier this year? [1]
RBI (India's central bank) doesn't implement the actual user facing stuff. If you read the article, it's two banks and two non-banks. One of those is Transcorp. Cheq UPI seems to be using Transcorp's backend.
Ha. I just came here to edit my comment. I remember seeing it before and just checked the docs again. In 5.2 it's STILL considered experiential. Craziness. It took me about an hour to build The basic functionality myself.
Thank you for noticing this, it is not considered experimental anymore. I integrated a change[1] to update the docs; it should percolate through to the site within thirty minutes.