Event ID - 4121

Event Id4121
SourceNotificationServices
DescriptionThe number of subscriptions in this quantum is greater than the throttle specified for subscriptions.
Event InformationAccording to Microsoft:
Explanation:

This error occurs when the number of scheduled subscriptions processed in the current quantum is greater than the throttle specified for subscriptions. In the <applicationexecutionsettings> element of the ADF, the throttle for scheduled subscriptions can be specified. If the number of scheduled subscriptions in a subscription class processed during a quantum is greater than the throttle specified, the rules are not run. The event log entry contains the current value of the throttle and the subscription class for which this value was exceeded. </applicationexecutionsettings>
User Action:
The current value of the throttle and the subscription class for which this value was exceeded can be obtained from the event log entry. Check whether the number of subscriptions processed in the current quantum is abnormal. This might happen if the schedule times for the subscriptions were specified incorrectly. If this is the case, correct the schedule time for the subscriptions. If the number is normal, increase the SubscriptionThrottle value in the <applicationexecutionsettings> element of the ADF. If you did not specify one earlier, the default value of 1000 was used.</applicationexecutionsettings>
Reference LinksEvent id 4121 from source Notification services

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