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Table configure no data and error

docs/sources/shared/alerts/table-configure-no-data-and-error.md

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ConfigureSet alert stateDescription
No DataNo DataThe default option for No Data events.
Sets alert instance state to Pending, then No Data after the pending period.
The alert rule immediately creates a new DatasourceNoData alert instance after evaluation, with the alert rule's name, UID, and the data source UID as labels.
ErrorErrorThe default option for Error events.
Sets alert instance state to Pending, then 'Error`after the pending period.
The alert rule immediately creates a newDatasourceError alert instance after evaluation, with the alert rule's name, UID, and the data source UID as labels.
No Data or ErrorAlertingSets the alert instance state to Pending and then transitions to Alerting once the pending period ends. If you sent the pending period to 0, the alert instance state is immediately set to Alerting.
No Data or ErrorNormalSets alert instance state to Normal.
No Data or ErrorKeep Last StateMaintains the alert instance in its last state. Useful for mitigating temporary issues.