Challenge Requirements
Create a work type named Drill Cable Holes that creates a service appointment automatically and estimates that the drilling takes 1 hour
Add 1 Drill as a required part

I had done all the steps but I am getting below error

Challenge Not yet complete... here's what's wrong:
Could not find one 'Drill' as a required part.

Infect I added one 'Drill' as a required part. I am attaching screenshot.