Air Bag Control unit Incorrect chassis number

Hi.
I would like to ask if it`s anybody near to Banbury and have Vag-com to fix Air Bag Control unit fault.

I have fault reading with ES[tronic] 2.0

Airbag AB 9.4
0702 Control unit Incorrect chassis number.

I don't have airbag light on. But my mechanic told me to fix it because my airbags wont work in accident.
Thanks