What Part is this? 2019 Jeep Cherokee
 

I have a 2019 Jeep Cherokee. I am missing part #30 on the diagram, and don’t know what it is called/can’t find any part number for it. Missing on left rear fender liner. Any help would be appreciated.
https://cimg4.ibsrv.net/gimg/moparfo...8bc738806a.png