The positives of having a qualification when applying for a job is that it allows you to have an upper edge over people that may not have the necessary requirements for applying.
Having a qualification when applying for a job that and having background knowledge of what is required for a job is valuable as you have an upper hand and better experience which means you may better meet selection criteria that will be required for the job you are applying for.
Qualifications also allow for a better understanding of the job description or the role that you will conduct. Role or job descriptions play a vital role