An autonomous AP configured as a Workgroup Bridge is properly set up but fails to associate to a CAPWAP AP. Which advanced WLAN setting fixes this?

Enabling Aironet IE (Information Element) is crucial for a Workgroup Bridge (WGB) to associate with a Cisco CAPWAP AP. WGBs use Aironet IEs to communicate their MAC addresses and other client information to the upstream AP, allowing the AP to properly manage the WGB and its connected wired clients. Without Aironet IE, the CAPWAP AP cannot correctly identify and associate the WGB. "Enable passive client" is for clients that don't send probes, not WGB association. "Disable AAA override" relates to authentication policies, not basic association. "Disable FlexConnect local switching" is for FlexConnect APs and their client data path, not WGB association with a CAPWAP AP.