DINDSNAM specifies the dsname of the allocated resource about which
you are requesting information. The data set name can contain special
characters if the data set name is enclosed in apostrophes. The dsname
can contain system symbols. See the topic on using system symbols and system symbols in z/OS MVS JCL Reference for
more information. 
If the data set you specify is allocated
to more than one ddname, Dynamic Information Retrieval will retrieve
information based on the first ddname allocated to the specified dsname.
It
is mutually exclusive with the ddname (DINDDNAM), relative entry (DINRELNO),
and pathname (DINPATH) keys. When you code DINDSNAM, # must be one,
LEN is the length of the dsname, and PARM contains the dsname.
The maximum length of the data set name is 44 characters, excluding any enclosing apostrophes and compressing any double apostrophes within the data set name.
KEY # LEN PARM
0002 0001 0006 D4 E8 C4 C1 E3 C1