Load Classification Node through CSV

Hi Experts,

I am trying to load Classification Node through csv referring the Help Centre Example "About the Load Files".

My CSV file:

/*BeginClassNode~create~wt.csm.navigation.ClassificationNodeLoader.beginCreateClassNode~structureClassName~nodeName~parentID~description~imageFile~refDefName~internalID

EndClassNode~create~wt.csm.navigation.ClassificationNodeLoader.endCreateClassNode*/

BeginClassNode,wt.part.WTPart,TestNode,Electronic Parts\CAPACITOR\FIXED,,,,

EndClassNode

I have converted this csv to xml and trying to load the xml, but it is throwing an error "Cannot construct new Classification Structure Default View!".

Please help me to resolve this issue.

What should be the  value of refDefName?

Thanks expert in advance.