I had this at about 9000 miles. My service wasn’t far off so I called the dealer. He said that the warning is generated by a computer analysis of various factors and isn’t important unless your routine service is a long way away.
My local dealer has closed and the supplying dealer was some way away (although I visit that town a lot). Knowing I would have to travel 20+ miles I found a dealer charging £108 for a first service. I thought that was a good price. Hollis Motors of Dover.