LSO= parameter for procedures

Use the LSO= parameter in procedure to specify whether to use the Local Storage Option (LSO) or the DL/I subordinate address space option. Valid values are Y, and S. The default is Y.

Y: Specifies that you want to use LSO. With this option, some IMS modules and buffers are moved from the CSA to the private storage area of the control region. This value is the default.
S: Specifies that you want to use the DL/I subordinate address space option. This value is required for a CCTL that is connected to an IMS control region or DBCTL region.