Originally Posted by
MaxFlyer
This is a defect wit my the new multi city tool. Best to find the itinerary with Google Flights and then call BA saying that the website is giving a silly error. That way you won’t be charged the booking fee.
If you book via an OTA then you will still get the Avios and TP as normal, just remember to add your BAEC number to the booking.
Thanks for the reply i had a look at a few OTAs, there was no option to add my EC number. Would I have to use the BA MMB to add this info?