Hello, goosebaypainters.
Thanks for reaching out to the Community for support. I'd be happy to provide some information.
When it comes to deleting a pay run, there are a few things you'd need to review. I encourage you to take a look at this article on how to delete a paycheque. This article provides detailed information as well as steps you need in order to proceed.
If you have any other questions, feel free to reach back out here.