SAP Message 1E602 - Only flagging for notification possible at this time (see long text)

Diagnosis Automatic notification of the account holder by a notification moduleis not possible at this time. This is because no notification modulewas linked to the system in Customizing by means of the businesstransaction event intended for this purpose, number 00012800. Thereforeyou can presently only flag accounts for notification. Procedure Inform your system administrator.