This shows all open items to which transactions have already been assigned. This makes it possible to see which items have already been paid or settled, either in full or in part.
The following information is visible here:
Amount vs. Amount due: Deviations are marked red, e.g. if less was paid than originally planned.
Link icon: A green icon indicates that matching has taken place. Clicking it undoes the matching.
Paid amounts: Either as a single transaction or as a total across several transactions (e.g. 4 transactions).
This view is particularly suited for tracking and checking payments received and made, and for checking whether further action (e.g. reminders or corrections) is needed.