SAS System Options for IMS Databases

IMSID= SAS System Option

Specifies a value for the IMSID parameter (the subsystem identifier) when SAS attaches a BMP, DLI, or DBB region.

Valid in:	SAS invocation
Category:	Engine, DATA step
Default:	IMSID=*
Restriction:	Assigned a value that you cannot override.

IMSID= * | value

*: specifies that the parameter is null in the attach parameter list, and therefore the identifier specified at IMS/ESA definition is used.
value: specifies to establish communication with the control region that has the same IMSID value during initialization.