Originally Posted by
starwarsgeek8
Wouldn't changing a UA codeshare to partner prime code necessitate a recalculation of the fare? I wasn't able to change a DL/VS codeshare to a VS prime code without a fare recalculation, but i suppose it could depend on the T&C of the JV agreement.
Not generally. It's possible the fare requires a UA-marketed flight but it's relatively uncommon. Otherwise the only difference between marketing carrier is sometimes inventory, but the conversion usually doesn't re-validate.