DSRLST session flows

Figure 1 depicts DSRLST session flows for the alias selection function; it indicates when the alias selection function is invoked and for what reason. The numbers correspond to the descriptions after the figure.

APPLA has issued an INQUIRE OPTCD=APPSTAT for an application program named UVNAME. UVNAME is a USERVAR known in NETC as APPLC.

Figure 1. Session flows for DSRLST

DSRLST session flows for the alias selection function; the ordered list after the figure describes the flows

VTAM® passes the DLU alias name. The alias selection function has the option of returning the DLU real name, the network ID of the DLU real name, and the owning SSCP of the DLU.
Same description as number 1.
SSCPC recognizes that UVNAME is a USERVAR for APPLC, returns the real name on the DSRLST RSP, and drives the session management exit routine to translate the DLU real name to the DLU alias name.
VTAM drives the exit routine to translate the DLU real name to the DLU alias name.
Same description as number 4.