If there are fields that haven't been recognised (not highlighted in blue) that you wish to map, select the dual key icon from the right-hand side. For example, the delivery address lines on this invoice have not been recognised as fields.
You can also hover over the button for a brief explanation of the use of the tool.
All text that was able to be read by the AI will now be available for mapping.
As with fields that had already been recognised (highlighted in blue), select and map the desired fields.
Once done, the newly mapped fields should be highlighted in green and their values should be displayed on the left-side mapping screen. Remember to click the dual-key icon again to return to mapping other fields.