Requested Incompatible QoS Status

Attribute	Attribute Meaning
total_count	Total cumulative number of times the concerned DataReader discovered a DataWriter for the same Topic with an offered QoS that was incompatible with that requested by the DataReader.
total_count_change	The change in total_count since the last time the listener was called or the status was read.
last_policy_id	The QosPolicyId_t of one of the policies that was found to be incompatible the last time an incompatibility was detected.
policies	A list containing for each policy the total number of times that the concerned DataReader discovered a DataWriter for the same Topic with an offered QoS that is incompatible with that requested by the DataReader.

A QoS policy requested is incompatible with the offered QoS policy by DataWriter.