I've just made a booking on BAEC from San Jose in Costa Rica to Miami (one way) as a reward booking using AA.

I read the conditions carefully before booking but nnow I've got the email through it says under endorsements - *m*redemption/restrictions may apply/restricted refund/non endorsable.

Any idea what this is likely to mean? Wasn't sure if this was just standard text but I checked BA rewards and it's not on those. I'd maybe not have booked it via BA if it wasn't possible to cancel if necessary.