Liveliness Lost Status

Attribute	Attribute Meaning
total_count	Total cumulative number of times that a previously-alive DataWriter became not alive due to a failure to actively signal its liveliness within its offered liveliness period. This count does not change when an already not alive DataWriter simply remains not alive for another liveliness period.
total_count_change	The change in total_count since the last time the listener was called or the status was read.

The liveliness of the DataWriter set by the QoS policy is not respected and DataReader entities will consider the DataWriter as "inactive"