I observed below exception from NetApps API jar File : manageontap.jar while accessing volumes in Filer.
Can please state the reasons for NaAPIFailedException and below is the stacktrace
Exception StackTrace:
netapp.manage.NaAPIFailedException: Unable to create iterator (errno=13001)
at netapp.manage.NaServer.invokeElem(NaServer.java:653)
...........................
Similar issue is discussed in NetApp community Portal at below URL :https://communities.netapp.com/thread/16241
but not with sufficient information.