DINDDNAM specifies the ddname associated with the allocation you are requesting information about. It is mutually exclusive with the dsname (DINDSNAM), relative entry (DINRELNO), and pathname (DINPATH) keys. When you code DINDDNAM, # must be one, LEN is the length of the ddname, and PARM contains the ddname.
KEY # LEN PARM
0001 0001 0003 C4 C4 F1
C017 0001 0016 00...00...00...00...