Forgot to stop complete my last stop of the day in the diad. Just human error. Saw it when I got back to the building when I was putting my miles in so I drove back with it not completed in my diad. Went to talk to my center manager about it being that I wanted to notify someone because both my sups are out today (one in class and one off for the day) and he was gone for the night. Is this a big deal or no? They had mentioned earlier last week that there's a report if you do this for air to try and not have late air but this was a ground package at 5 o'clock. Any concern?