Extraction should successfully extract and validate the lines on an invoice. As a result, it is very rare that you need to add a new line to the Unallocated Items table.

An example of a rare case is when a valid line item is not extracted at all, but another line item is extracted, but with an incorrect value. This incorrect value adds up with the other totals and the document passes validation, even though it has the wrong line items. Because of this, line pairing is unable to automatically reconcile this document, so it is displayed in Line Pairing Correction. Here, you can add the correct lines from the invoice manually, and then allocate them to the PO as needed.

You can add an invoice line item manually, by following these steps.