Hi,

I started to use OCM to save object to repository today and got an exception 
below. It seems that I need to register a namespace ocm. Can anybody please 
tell me how to fix it?

org.apache.jackrabbit.ocm.exception.ObjectContentManagerException: Cannot 
create new node of type nt:folder from mapped class class 
com.openandgreen.service.system.Folder; nested exception is 
javax.jcr.NamespaceException: ocm: is not a registered namespace prefix.
javax.jcr.NamespaceException: ocm: is not a registered namespace prefix.

Thanks a lot,
Kevin

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