After the application program has run, the server program can disassociate the subspace-eligible storage from the subspace to which it is assigned. This allows the server program to assign eligible storage to another subspace when it receives a new request for application program services. Disassociating the storage also prevents an application program from referencing the storage before it is reassigned.

Use the IARSUBSP macro with the UNASSIGN parameter to disassociate subspace-eligible storage from the subspace to which it is assigned.