Train a learning instance
Ensure that you train a learning instance for extracting data from documents. Editing the validation rules for auto-mapped fields can further improve the accuracy of data extraction.
When you click a field in the left panel, the mapped field and its value displays in the center panel. You can validate the field and its value in the document, displayed in the right panel.
If the mapped field value is accurate, the Designer displays a green check mark next to the mapped field in the center panel.
Mark a field Optional in case the value in a field appears in some documents only. By default, fields are marked as Required unless a field is added after creating the learning instance. In this case, the field is Optional by default. See example below.