You can use any number of data sets or members as input for IEBDG. You must code a separate DD statement for each data set or member.

You cannot, for instance, use two members of a partitioned data set by only coding one DD statement for the data set. If the input data set is a member of a partitioned data set or PDSE, you must code the DD statement so that it refers to that member. Do this by coding the data set name parameter as DSNAME=datasetname(membername).

You can also specify a sequential data set as an input data set. If the data set is sequential, it can be basic format, large format, extended format, compressed format, a UNIX file, a TSO terminal or on tape. The data set maximum block size cannot exceed 32760 bytes.