Registrar: Error encountered during Pool failback

Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.Registrar.ES_E_POOL_FAIL_BACK_FAILED (UnitMonitor)

Knowledge Base article:

Summary

Failback process has encountered an error

Causes

Possible issue with local or shared backup database.

Resolutions

Please consult server event logs to identify the problem. Run the failback process again after fixing any reported issues.

Element properties:

TargetMicrosoft.LS.2019.Component.Registrar
Parent MonitorSystem.Health.AvailabilityState
CategoryAvailabilityHealth
EnabledTrue
Alert GenerateTrue
Alert SeverityError
Alert PriorityHigh
Alert Auto ResolveTrue
Monitor TypeMicrosoft.LS.2019.MonitorType.PairedEvent.Simple
RemotableTrue
AccessibilityPublic
Alert Message
[Skype] Failback process has encountered an error
{0}

Please see the 'Product Knowledge' and the 'Alert Context' tab on Alert Properties view for more information.
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.Registrar.ES_E_POOL_FAIL_BACK_FAILED" Accessibility="Public" Enabled="true" Target="SFBDiscovery!Microsoft.LS.2019.Component.Registrar" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Microsoft.LS.2019.MonitorType.PairedEvent.Simple" ConfirmDelivery="true">
<Category>AvailabilityHealth</Category>
<AlertSettings AlertMessage="Alert_Failback_process_has_encountered_an_error">
<AlertOnState>Error</AlertOnState>
<AutoResolve>true</AutoResolve>
<AlertPriority>High</AlertPriority>
<AlertSeverity>Error</AlertSeverity>
<AlertParameters>
<AlertParameter1>$Data/Context/EventDescription$</AlertParameter1>
</AlertParameters>
</AlertSettings>
<OperationalStates>
<OperationalState ID="Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.Registrar.ES_E_POOL_FAIL_BACK_FAILED.Success" MonitorTypeStateID="SuccessEventRaised" HealthState="Success"/>
<OperationalState ID="Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.Registrar.ES_E_POOL_FAIL_BACK_FAILED.Error" MonitorTypeStateID="ErrorEventRaised" HealthState="Error"/>
</OperationalStates>
<Configuration>
<ComputerName>$Target/Host/Host/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>
<LogName>Lync Server</LogName>
<SuccessExpression>
<Or>
<Expression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="UnsignedInteger">32157</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">LS User Services</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</Expression>
<Expression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="UnsignedInteger">12288</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">LS Server</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</Expression>
</Or>
</SuccessExpression>
<ErrorExpression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="UnsignedInteger">32158</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">LS User Services</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</ErrorExpression>
</Configuration>
</UnitMonitor>