Runnable job class in d365 F&O UAT environment

https://rsmta-peter1234aos.cloudax.dynamics.com.cloudax.dynamics.com/?cmp=sppl&mi=SysClassRunner&cls=XXTCustomerUpdate

Run custom X++ scripts with zero downtime

Auto run Script in UAT and production using runnable Job:

https://learn.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/deployment/run-custom-scripts