XTIOT, uncaptured UCBs and DSAB above 16 megabytes virtual
Description: Work data sets dynamically allocated by DFSORT will use options for XTIOT, uncaptured UCBs, and DSAB above 16 megabyte virtual to the extent that z/OS® supports them.
When change was introduced: z/OS V2R1
Reference information: z/OS DFSORT Application Programming Guide