Originally Posted by
jerry a. laska
If you didn't book under the BA codeshare flights number then it isn't an eligible flight. The fact there might be a BA codeshare does not make it an eligible flight. Does your itinerary show that you booked the BA codeshare even if the boarding pass does not? If the itinerary shows that you booked under the BA codeshare then you will need to send copies of this to BAEC.
It's a Finnair ticket so only AY flight codes are shown. BAEC added the two eligible flights to my EC account after I explained the situation without issue back in April. I will escalate next week.