Erroneous date in system

I was at work last week and found I no longer have my clearance. I was told it was because the security side of things sees that I have gotten out of the military, which I have NOT.

I’m curious, this doesn’t mean anything came up with my background investigation. Spoke to my investigator a month or so ago, but havent heard anything else from him.

Is this really just an error in entering a date? I literally can do nothing at work so I check in let them know I’m alive and then sit in my barracks room all day.