Output parameters for the function routine are:

• SSOBRETN
• SSVS

SSOBRETN Contents: When control returns to the caller and register 15 contains a zero, the verify subsystem function places one of the following decimal values in the SSOBRETN field indicating whether the subsystem name in the SSIBJBID field is valid:

Value (Decimal)

Meaning

SSVSNAM (0)

Valid subsystem name

SSVSJBNM (4)

The name in the SSIBJBID field is not the name of a defined subsystem.

SSVS Contents: The SSVS control block contains the following information if a valid subsystem name was specified:

Field Name

Description

SSVSSCTP

Pointer to the subsystem's SSCVT.

SSVSNUM

The subsystem affinity index value that you can use in a SSAFF macro request. See Maintaining Information About the Callers of Your Subsystem for more information on the SSAFF macro.