Well..
The main concern will always be: is my name correct on the ticket and will I get mileage credit. Sometimes the tech system does not recognize if name if not spelled out in full.
Mileage credit: that's the ticket.
That's gotten ordinarily without much trouble -- missing mileage credit and/or making sure the correct account number is in the correct field at time of booking and check-in should make that a non-issue for most all customers in the situation of the OP.