In recruitment, what problems will lead to job application failure?

Health discrimination.

This is actually often seen during recruitment.

The most common is discrimination against people with disabilities, which is very common, especially those with mild disabilities, which have little impact on their work and are the focus of discrimination.

I have seen this situation many times. For example, there was a person who had one leg longer than the other and walked a little up and down. It did not affect any work and was rejected.