you are filling out a change order form. toward its end, you explain how you will return affected hardware and software to its original state if the change fails. what is this plan called?

The plan you describe, which explains how you will return affected hardware and software to their original state if the change fails, is called a backout plan. This plan is a key part of change management and details the steps to undo the change and restore the system to its prior stable condition in case the change does not succeed