"Banks and other PSPs will have to ensure credit transfers are affordable and immediately processed...[while also being] executed regardless of the day or hour."

https://www.finextra.com/newsarticle/43668/meps-nod-through-ten-second-instant-transfer-rules#:~:text=Under%20the%20rules%2C%20an%20instant,available%20to%20the%20intended%20recipient.