@billhdz 

By default they will tell you QBD 2021 does not support Sequoia. This is to avoid complaints if you find an error later. In fact we can still run QBD 2019 or newer on Sequoia with minor (random) issues. If you experience any errors after upgrading the OS, you should contact Fiat Lux for advice.

www.fiatlux.co.id/single-post/quickbooks-desktop-after-september-2024-what-next