When sending reactions into DFP, we strongly recommend using the segment code (as opposed to the segment name) so when looking in the developer console, only the 4 digit undecipherable code appears.
This may make it confusing when targeting these segments in DFP for a campaign so we suggest renaming these kay-values.
In DFP go to Inventory → Key Values → Search 'permutive'
You'll see the list of segment codes under targeting values. Click Display name on the and enter the segment name.
If you have any question please don't hesitate to reach out to firstname.lastname@example.org