If the Learning Instance is in the Staging environment, the documents are placed in a separate group called Not Classified; and for the Production environment, the documents are placed in a separate group called Unprocessed.

Some reasons for this behavior could be unacceptable document quality, poor DPI, minimum fields required for classification criteria not being met, or documents not related to the selected domain. A document gets unclassified because of the minimal field identification rule. This rule helps to maintain the quality of classification vis-a-vis the quality of a document. It dictates the classifier to classify a document only when a specific minimal number of Keys/Fields related to a domain are found in that document. This minimal number depends on the number of fields selected when creating a Learning Instance for a specific domain.

An example of this rule is as follows:

• Except for Other domain or a custom domain, if you selected six or more fields from a default or uploaded domain for extraction when creating a Learning Instance, the classifier expects to find at least six fields (any six, not specifically the selected ones) related to the selected domain in the document. If it is unable to do so, the document gets unclassified. A person can also classify by entering a limited number of custom fields.
• If you selected 5 domain fields for extraction when creating a Learning Instance, the classifier expects to find at least 5 fields (any 5, not specifically the selected ones) related to the selected domain in the document. If it is unable to do so, the document gets unclassified.
• If you selected 4 or less domain fields for extraction when creating a Learning Instance, the classifier expects to find at least 4 fields (again, any 4 and not specifically the selected ones) related to the selected domain in the document. If it is unable to do so, the document gets unclassified.
  Note: When the document quality is not so good, it negatively affects the number of Keys/Fields related to a domain in that document.