score:8
My friend told that she was trying to buy through third party websites. Through them she wasn't able to purchase the ticket. They were canceling the ticket...
Once she directly reached out to an airline, she got the matter resolved. They bought the ticket with the first 9 characters of the last name, but QatarAirways employee said we'll enter into the system the remaining (22) characters ourselves.
FWIW she got her ticket through Qatar Airlines...