Authorization index

The types of PC routines that the entry table defines determines whether the service provider must obtain an authorization index. If either of the following conditions are true, the service provider must obtain an authorization index:

The entry table defines a basic PC routine that causes a space switch
The entry table defines a stacking PC routine for which the ETDEF macro specifies SASN=OLD.

The service provider must issue the AXRES macro to reserve an AX. The service provider must then issue the AXSET macro using the reserved AX value as input. AXSET assigns the AX value as the authorization index for the service provider's home address space.