The Vehicle Check service is part of the service schedule on a Condition Based Servicing BMW. It isn't optional - it is part of the schedule. Many years ago it was included in the Inspection servicing system on the older cars, but with the move to Condition based servicing it was made a seperate service element. It is often due around the same time as the more major of the two oil services, but not always.
There is a second service element which people often confuse with this - the Statutory Vehicle Inspection. This is actually the MOT - not a service.
You need to check whether the car is asking for the Vehicle Check service or just telling you that the MOT is due. If in doubt, ask the dealer for advice.
The MOT is next Feb so it's not that . Ita just the vehicle check