@IBP said in How do you set up new Parent Interfaces on pfSense:
WAX615-100EUS
That's an external Access Point not a wireless NIC. You would only see that error if you're trying to create a wifi interface within pfSense. Like you have put a WIFI PCIe cxard in the 2100 dircetly and are creating virtual access points on it. Unless you have that you should not use the Wireless Interface tab at all.
What exactly are you trying to do?