You guys need to read the application . Does it say have you ever failed any check rides , stage checks or failed to complete training .
Every app is different. Its impossible to answer that question without more info .
That being said DO NOT panic that its a career ender . Honesty is always the best policy when answering application questions though . A company will accept a guy/gal with a slip up but wont tolerate lying especially after spending $ on doing your back ground then finding out you lied .