TSM behaves as both an IP Availability Manager, and a manager of other IP Availability Managers by controlling the distribution of devices to them.
When constructing the mapping, it is recommended you use a TSM as the destination for any of the subordinate IP Availability Managers.
If the mapping rule includes a subordinate IP Availability Manager, the mapping is evaluated against the managing TSM and allows the TSM to add the device to the pending list entries in any of its subordinate IP Availability Managers.
When the IP Availability Manager used in the mapping rules, or the default IP Availability Manager selected is managed by a TSM, then the devices always get added to the TSM.