The disk or tape space requirement for the new data set defined by the SYSUT2 DD statement is approximately equal to that of the input data. If you are converting a single program object to its transportable format, allocate the same number of bytes as currently used by the PDSE member. If you are converting an entire library, allocate the same number of bytes as currently used by the PDSE program library. When converting a transportable file back to one or more program objects, the disk space requirement is approximately equal to the size of the transportable file.