Why does a LISTD of a Copy tape not show any data set entries?
LISTD goes against the DSNINDEX records only and they only refer to the Primary tape.
So only a LISTD for the primary key will show the related data sets.
There is no direct relationship between the Copy ARCHVOL and the DSNINDEX records.
The connection to the Copy tape is done within the Primary ARCHVOL record.
So LISTV of PRIMARY and COPY will show the same information about number of data sets, block count, etc.
But a LISTD of a COPY key will not show any related data sets, as no DSNINDEX record is pointing to it and message 3543 is issued:
ADSDM484 3543 NO RECORDS SELECTED