Cop gave me a warning, do I have to report it to my company?

Was delivering to a customer today and cop pulled me over and said I was on a road I shouldn’t be on. The customer’s name is GE distribution center located at 238 Belvidere rd, Perryville, MD. I followed the GPS and I was on a road called hwy 7 which also goes by Philadelphia rd. It is a truck legal road according to the GPS. I’ve never had a problem with the GPS in a year and a half of driving. He said the GPS was going to take me down a residential area and they’ve been trying to get it fixed for a year. He also said there were signs which the only signs I saw were Detour signs. I was apparently supposed to go down 40 east which is right next to hwy 7. He ended up giving me a written warning. Then I said this is gonna go on my points and he told me I don’t have to report it. He said this written warning is between me and him. I got to the customer and told them what happened and they say that it happens all the time. When he pulled me over he immediately starting telling my license plate # to dispatch. I’m hoping he just wanted to see if this was my 1st time making this mistake. I think they now have me in the system and if I make the same mistake again THEN I will get a ticket. I’m hoping this won’t go on my record. I ended up calling my FM and telling him that I could’ve gotten a ticket and they need to update the instructions for this customer. I didn’t tell him I got a written warning tho. I can’t afford anything else on my record. Should I report this? Is there any way for me to find out if this went on my record before reporting?

 

There was no inspection. He just pulled me over for 5 minutes and asked for my registration and license. Then he came back with the written warning.