title: cq:tags error "com.day.cq.tagging.impl.TagValidatingEventListener invalid/duplicated tags detected at content/"
body: <p>I am setting a node property "cq:tags" in form of String array.
  My java code sets this property upon node creation.
  But this gives me error and the "cq:tags" property gets stored as a blank String array.
  The error is:
  com.day.cq.tagging.impl.TagValidatingEventListener invalid/duplicated tags detected at content/...</p>
  
  <p>Can someone please help on this?
  Thanks in advance.</p>