18. The method of claim 1 , further comprising obtaining the document related to the item and the further document related to at least the further item.
18. The method of claim 1 , further comprising obtaining the document related to the item and the further document related to at least the further item. 21. The method of claim 18 , further comprising identifying at least one similar field that appears in the document and in the further document, and further comprising identifying dissimilar contents of the field that appear in the document and do not appear in the further document.