I am filling the FedEx application for pilot employment and one of the questions is

Have you ever received fomal discipline from your employer?

I had to attend focus training for a couple hours due to the fact that I conducted an improper ice test. In the airplane I was flying the checklist call for an ice test to be done while having the parking brake set. I did not set the parking brake and did it while on the taxi and holding the brakes.

Due to this reason I had to attend focus training which consisted in telling me to set the brakes next time.

My question is do I need to check yes for this question?