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Setting Up User Exits › Signon and Signoff Exit › Signon Function

Signon Function

The signon process is serialized in such a way that after the signon data call point has been entered, the signon function will not be entered for any other user until the request has been completed (function call 24), rejected (function call 16 return code 0), or a new password or password phrase has been requested (function code 12 return code 8 or the appropriate RACF, CA Top Secret, or CA ACF2 return code).