Data set name for dummy data set

NULLFILE

Specifies a dummy data set. NULLFILE has the same effect as coding the DD DUMMY parameter. NULLFILE must be coded as a single-word parameter. For instance, IBM does not support the use of NULLFILE to obtain a dummy data set for these (or other) formats:

When followed by a member name
As a qualifier in a qualified data set name
As a temporary data set name.