You can increase the amount of storage that CLIST can use for variables by allowing the CLIST variable pool to reside in storage above the 16MB line. Use the new PROFILE option VARSTORAGE(HIGH/LOW) to indicate whether variables can use storage above the 16MB line (HIGH) or below the 16MB line (LOW). Using VARSTORAGE(HIGH) means the system can trap more variables.

See the PROFILE command in z/OS TSO/E Command Reference for more information.