Synchronization doesn't work between SOI and Spectrum if a CI of Class Application and Type RTM_Test is set into Maintenance Mode.
How do we need to configure the Spectrum Connector and SOI to synchronize Maintenance Mode for RTM_Test Models ?
The answer to this question is to update the connector configuration file(name: 'spectrumim_connectorHost_spectrumHost.xml') on the connector host under the location "<Connector root>/resources/Configurations".
Update the file by adding "Application" for property "InboundToConnectorTypes" under the tag <connector-type-meta-data>, like below:
<connector-type-meta-data>
<property name="InboundToConnectorTypes">ComputerSystem,Switch,GenericIPDevice,Router,Service,BinaryRelationship,Alert,VirtualSystem,Port,Application</property>
</connector-type-meta-data>
and restart the connector with "IsInMaintenance Property Synchronization" - ENABLED on the manager configuration.