Global user exits in signon and signoff

CICS provides the XSNON global user exit in EXEC CICS SIGNON processing and the XSNOFF global user exit in EXEC CICS SIGNOFF processing. These exits do not allow you to affect the result of the sign-on or sign-off, but notify you when the userid associated with a terminal changes. The exits are further described in the CICS® Customization Guide.