The number of Data Record Transfer Request
(retransmission) messages sent to the PSD server.
The PSD does not differentiate between a retransmission
and original request. So, this counter together with
the above two counters cPsdClientDSReadReq/
cPsdClientDSWriteReq can be used to tally the number of
messages received by the PSD client.
This counter is incremented when the FIFO read/write
retransmission messages are sent to PSD server.