In April 2018, the Reserve Bank of India (RBI) effectively banned banks through a notification from supporting or engaging in crypto transactions until the Supreme Court overturned the restriction two years later. Thus, it is unlikely that the RBI or RBI governed NPCI would release any official document, notification, circular, or order that could push banks or payment gateways from providing their services to crypto exchanges.
Source: https://www.coindesk.com/business/2022/04/14/some-indian-payment-processors-cut-off-local-crypto-exchanges/?utm_medium=referral&utm_source=rss&utm_campaign=headlines