For VS/APL to be available, you must ensure the status indicator is set to available and the variable QCLVSAPL is set to yes. For VS/APL to be unavailable, only the status indicator needs to be set to unavailable. When shipped by IBM®, QCLVSAPL is set to yes by the Application Manager function ICQVSAPL. Do not change the value of the variable QCLVSAPL. If you change the value to no, administrators will not be able to make VS/APL available by only setting the status indicator to available.