Notification on failed Zwave command

If I send a command to a particular Zwave node (ie to turn on or off) and the command fails (due to radio interference or whatever) how can I have a pushover notification sent to me?

Here’s what I’m trying to do:

I have an outdoor zwave module connected to an Orbit valve connected to my hose and sprinkler. I have an automation for running the lawn sprinkler for 1 hour. It usually works fine, but today I came home to find it never shut off, and watered the lawn for 5 hours. Haven’t confirmed from logs, but I suspect it’s because the zwave off command failed. If I’d known I could have manually retried the off command or driven home to resolve it.