Multiecuscan

I'm a bit confused - how to select the right vechicle model.
I have a Fiat Ducato 250 MultiJet 2,3. When I select the model (facelift) I get an error telling me, that the ISO code is wrong and that a "Marelli 9DF CF6/EOBD Diesel Injection (2.3)" was discovered. When I look in the vechicle list, this engine belong to the 290-version of the Fiat Ducato program. Is the list wrong and should I just pretend that it is the 290-model?

Use the 290 model version and see how you get on. Hopefully you will get a valid ISO code. If not I think you should still be able to proceed on either the 250 or 290 model selection BUT I WOULD NOT attempt a PROXI alignment procedures with invalid ISO codes just to be on the safe side.

the X290 was introduced in the summer of 2014
If yours was registered in 2018 it is a x290 euro 6 (manufactured late 2016 for 2017 models)
look at wikipedia and you will see the different front ends
If you connect with MES and do a scan.
My x290 2017 modl reg 2018

Scan vehicle for available modules and check each module for errors...

Engine / ECM
Marelli 9DF CF6/EOBD Diesel Injection (2.3)
ISO Code: 00 01 50 08 14

Body / BCM (Body Computer Module)
Body Computer Marelli (290)
ISO Code: BF 83 8F 0D B3

ABS / ABS/BSM (Brake System Module)
Bosch ABS 9
ISO Code: EC 07 2F 0D 04

************************************************************
VEHICLE SCAN REPORT
************************************************************
Scanning ...

Engine / ECM
Marelli 9DF CF6/EOBD Diesel Injection (2.3)
ISO Code: 00 01 50 08 14

Body / BCM (Body Computer Module)
Body Computer Marelli (290)
ISO Code: BF 83 8F 0D B3

ABS / ABS/BSM (Brake System Module)
Bosch ABS 9
ISO Code: EC 07 2F 0D 04

COMPLETED
VEHICLE MAKE: fiat
VEHICLE MODEL: ducato
VEHICLE YEAR:

if you connect to the engine control module press F10 to connect weather you select 8DF or 9DF it will return the one you have
(Multiecuscan 4.5)
01/11/2020 23:19:06
Fiat Ducato (type 290) 2.3 Multijet
Marelli 9DF CF6/EOBD Diesel Injection (2.3)
--------------------------------------------------------------
Hope this helps