This is a query output header message.
This message appears only when the LISTWS command input specified a list of volume serials to match to. This message indicates that the remainder of the report shows only working space data sets on volumes compatible with the listed VOLSERs. If more than (insert a number here) VOLSERs were requested for filtering, this line might appear multiple times.
VCC operations continue. Additional messages are displayed to the console and syslog.
System data mover (SDM).