This ddname can refer to an actual data set or to a file on a tape (such as file 1 on an ESO tape).
For example, if DD * is specified for SYSIN and the SMPPTFIN data set contains the characters $$, then $$ cannot be used as the default delimiter for the input or for the delimiter specified on the DLM parameter. (The output of SMP/E service routine GIMDTS contains the characters $$.)
Refer to the documentation supplied with the tape for exact information about how to code the SMPPTFIN DD statement. For example, with a product tape, the program directory contains this information.