How can I change frequent flyer account for the existing flight reservation?

[chempire]

Hi, I booked a Delta flight through Concur. However, I made a mistake in choice of frequent flyer account. I always choose Korean Air Skypass. However, by mistake, I did not change the default Delta Skymiles account to Skypass during the reservation.

For the purchased and confirmed flight reservation, how can I change the frequent flyer account of that reservation within Concur reservation system?

I need to change frequent flyer account for my reservation because currently seat selection at my Korean Air Skypass App is not working due to this.

Thank you in advance. 

[EllenR]

SAP Concur doesn't currently support the ability to add or change your Frequent Flyer account number after booking.  You can either contact your agency to add the number, or you may be able to pull up your reservation on Delta.com and add it there.  

(Good idea though!) 

- Ellen