Cisco WCS v7.0 using a Cisco 3300 Series MSE can map and track wireless clients but is unable to track RSSI-based RFID tags. What is the most likely cause of this problem?

RFID tags typically broadcast or beacon and do not associate like clients, nor does multicasting prevent RSSI-based tracking.

Cisco Compatible Extensions (CCX) certify wireless devices for advanced features and compatibility with Cisco infrastructure, including specialized location services for RFID tags. If RFID tags lack CCX compatibility, the MSE cannot properly process their proprietary or enhanced location data, preventing RSSI-based tracking while basic client tracking (which relies on standard 802.11 associations) still functions.

A Cisco WLC RFID timeout configuration change would affect how long tags are tracked after their last signal, not the initial inability to track them at all.

If Cisco WLC RFID tracking was completely disabled, no tags would be tracked; however, lack of CCX compatibility prevents proper processing even if tracking is enabled.

A missing license on the Cisco MSE would likely affect all location services, including wireless client tracking, which the question states is working.

Incorrect NMSP configuration between Cisco WCS and Cisco MSE would generally disrupt all communication and thus all location services, including client tracking, which is functioning.