In backend system, promotion code already mark as unavailable, means the code already enter use by participant https://bit.ly/2J7R6LP
What does it show in the CSV? Just an empty cell?
But when export the csv repost, even is pending payment but the promotion code used should be list inside the csv report, but when search whole report, there no promotion code found as the image attached above https://bit.ly/2JVvgMX
This cause we unable know who use the promotion code..
* this is 1 of the sample code, still having some code (unavailable) also not found in csv