Help....Ducato airbag fault after Proxi-Alignment

[Nutloose]

Ducato 2.3 2009 (Iveco engine)
ECU and BCM changed because of faulty ECU. Van starts and runs fine.
Mileage flashes.

Connect multiplexed cantiecar with 2.7 software to do a Proxi-Alignment.
Carry out alignment.. result says OK but Airbag light stays on.
Airbag fault = B104A PROXI Alignment Procedure Signal Low Present
Repeated procedure but same result.

Does anyone have an idea?
thanks
Nutloose

[Nutloose]

fixed....
BCM was not compatible with Airbag module.

re-fitted original BCM + ECU then do Proxi-alignment and clear airbag fault.
Swap ECU data into replacement ECU.