Agrovoc fields in agridrupal

Hi,

I am trying to create a repository and use agrovoc as the vocabulary. Could someone clarify a few points for me:

  • Why the need for the fields Agris subject categories, Agrovocimport and Agrovoc Terms?
  • I have noticed that the fields Agrovocmport and Agrovoc Terms do not appear in the create content page of content type "Document". Why not and how does one achieve this?
  • Is the Agris subject categories taxonomy supposed to get updated the way the taxonomy Agrovoc codes does?

I have tried using the Agrovoc module but I have had challenges. You can view the posted error via the following link http://drupal.org/node/1408016.