Originally Posted by
DeltaWebDev
i'm not aware of any issues with using ecredits. what kind are they and how old are they?
They are unused refundable tickets, all less than 60 days old. In the past, if you didn't use a ticket, the residual value of it (which in the case of refundable tickets is full value) transferred to the SkyMiles account and could be used as an eCredit for the next ticket purchase.