Can a offense, not knowing i was charged with stop me from a career in law enforcement?

Through the process of submitting myself to a security and background check by the, NJDOC, respectfully came across a criminal record in my background. At the time of this incident I was 12 years old and immature. I am fully aware of the actions that took place that day. In fact I can even remember the event and scenery that was around that day. I was not the greatest child growing up. I was not aware I was charge for a crime. When my records were searched by officers, not too long ago, they said I was clean and had no criminal record. I cannot tell you if they were leading me to believe this information was false or not. But as a respectable, sworn in Law Enforcement Officer, I believe what was told to me.