Totally wrong
It is my car and I have actually been in the workshop with the dealer technicians trying to overcome the problem.
The fault shows up as an error because the BMW programmer looks for all items on the car and in my case could not recognise the radio. Thus the programme aborts until it can recognise all components.
After a few phone calls to Mikey all is now sorted.
The dealer was great about this. I was allowed into the workshop to work alongside the technician, I borrowed tools to be able to dismantle the car and disconnect the Parrot SW controller - did not work. So out with the drivers side shelf to gain access to the original radio loom, phone call to my son who then brought me the standard boost radio, I connected it up, called the technician over and hew presto 5 minutes later full programme access was gained and my OBC etc reset to read KM. I was then allowed to re-assemble the car and hand all tools back to technician.
The unanswered question is WHY - as MIkey states above many cars have after market radios, my other GP has aftermarket and will communicate so why a problem this time.
Scratches head and waits for an answer.
10 out of 10 for customer service from Mikey and Sytner Sunningdale.
Alan