If you are required to have a police check done and you are from Australia then you would probably be considering going for an afp criminal history check. It all depends upon the kind of job that you may be applying for as certain categories of employment do require police checks as part of their recruitment procedures.
It all depends upon the nature of job that you are looking to do as not every category of job that you could be getting into would require that you submit your police background report. It would therefore be a good idea for you to start looking for the best way to go ahead and get a police check done which is usually about your criminal background check.
Even if you do not suspect having committed any crime in the past, it would still be a good idea for you to go ahead and get a police check done so that you know exactly what is held on record for you.
Sometimes, cases of mistaken identity could also tarnish your reputation and without knowing what is held by the police with regards to your criminal background record, it would be difficult for you to fix any issues that you may have with it.
The best solution is therefore to go ahead and look for the right channel or website where you could be getting your afp police check or criminal background report which you could use for your own knowledge as well as for any jobs that you may be looking to apply.