Please check: processing for all suppliers

What causes this issue?

You have not specified a supplier for invoice selection. Therefore, the
system searches for the blocked invoices for all suppliers. This is very
time consuming. For this reason, you are requested to limit the search
- if possible - by entering a supplier.

How to fix this error?

If you only want to process the blocked invoices for one supplier, enter
this supplier only.
If you want to process the blocked invoices for a few suppliers, process
each supplier separately. Enter the first supplier.
If you want to process the blocked invoices for all suppliers,
acknowledge this message without making a further entry (by pressing
ENTER).

Error message extract from SAP system. Copyright SAP SE.