After completing the configuration we never received the expected message "Finished synchronizing users between UIM and CABI" in the probe log.
instead the following error is received
[UserSynchronizationThread, cabi_external] Warning: unable to sync users with CABI. Cause: 'Received status (15) on response (for sendRcv) for cmd = 'hubsec_list''. Will retry in 60 seconds. For more detail please set log level to DEBUG.
The following corresponding error is found in the hub.log (level 3)