The database is already involved in log shipping.

Microsoft.SQLServer.2000.The_database_is_already_involved_in_log_shipping (Rule)

Knowledge Base article:

Causes

If this error occurred on the primary server, this database is already configured as the source database in a log shipping pair. The information about source databases in log shipping is stored in msdb.dbo.log_shipping_databases on the primary server.

If this error occurred on the secondary server, this database is already configured as the destination database in a log shipping pair. The information about destination databases in log shipping is stored in msdb.dbo.log_shipping_plan_databases on the secondary server.

Resolutions

If the error occurred on the primary server, execute sp_delete_log_shipping_database for the specified source database on the primary server.

If the error occurred on the primary server, execute sp_delete_log_shipping_plan_database for the specified destination database on the secondary server.

Element properties:

TargetMicrosoft.SQLServer.2000.DBEngine
CategoryEventCollection
EnabledTrue
Event Source$Target/Property[Type="SQL!Microsoft.SQLServer.DBEngine"]/ServiceName$
Alert GenerateTrue
Alert SeverityInformation
Alert PriorityNormal
RemotableTrue
Alert Message
The database is already involved in log shipping.
{0}
Event LogApplication
CommentMom2005ID='{B9B72AF5-E09A-4779-A94D-4F49A86DDACA}'

Member Modules:

ID Module Type TypeId RunAs 
EventDS DataSource Microsoft.Windows.EventProvider Default
GenerateAlert WriteAction System.Health.GenerateAlert Default

Source Code:

<Rule ID="Microsoft.SQLServer.2000.The_database_is_already_involved_in_log_shipping" Target="SQL2000Core!Microsoft.SQLServer.2000.DBEngine" Enabled="true" Comment="Mom2005ID='{B9B72AF5-E09A-4779-A94D-4F49A86DDACA}'" Remotable="true">
<Category>EventCollection</Category>
<DataSources>
<DataSource ID="EventDS" TypeID="Windows!Microsoft.Windows.EventProvider">
<ComputerName>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>
<LogName>Application</LogName>
<Expression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery>PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value>$Target/Property[Type="SQL!Microsoft.SQLServer.DBEngine"]/ServiceName$</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<RegExExpression>
<ValueExpression>
<XPathQuery>EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>MatchesMOM2005RegularExpression</Operator>
<Pattern>^(17052|17055)$</Pattern>
</RegExExpression>
</Expression>
<Expression>
<RegExExpression>
<ValueExpression>
<XPathQuery>EventDescription</XPathQuery>
</ValueExpression>
<Operator>MatchesMOM2005BooleanRegularExpression</Operator>
<Pattern>(^.*14424 and (not ^.*\n.*14424)) or (^.*14424.*\n.*14424)</Pattern>
</RegExExpression>
</Expression>
</And>
</Expression>
</DataSource>
</DataSources>
<WriteActions>
<WriteAction ID="GenerateAlert" TypeID="SystemHealth!System.Health.GenerateAlert">
<Priority>1</Priority>
<Severity>0</Severity>
<AlertOwner>$Data/PublisherName$</AlertOwner>
<AlertMessageId>$MPElement[Name="Microsoft.SQLServer.2000.The_database_is_already_involved_in_log_shipping.AlertMessage"]$</AlertMessageId>
<AlertParameters>
<AlertParameter1>$Data/EventDescription$</AlertParameter1>
</AlertParameters>
<Suppression>
<SuppressionValue/>
</Suppression>
</WriteAction>
</WriteActions>
</Rule>