In this example schema, element "LineItemARBOType" has a child of type "LineItemARBOType" again.
Following are warnings generated in the process:
Service 'xx' can not be imported, because none of its ports could be imported.(SBL-EAI-04333)
Port 'xx' can not be imported. PortType 'xx' can not be imported. The http://schemas.xmlsoap.org/wsdl/:operation 'xx' was ignored. Error importing XML schema via method 'xx' for 'element' 'xx' in 'xx'(SBL-EAI-08009)
Cycle detected in the 'xx' schema: xx 'xx' has a cycle (SBL-EAI-09008).