What method can be utilized to enter an invoice without invoice blocking in SAP S/4HANA?

In SAP S/4HANA, entering an invoice without blocking is a straightforward process that involves understanding the different methods available for handling invoices. The method of using manual invoice reduction allows users to reduce the amount of an invoice proactively before it is processed fully, thereby preventing the block that typically occurs when discrepancies arise between the invoice and the purchase order.

Manual invoice reduction is particularly useful in situations where adjustments need to be made based on corrections or negotiations with the supplier. By utilizing this method, users can ensure that the invoice reflects the appropriate amounts, leading to smoother processing without the risk of triggering invoice blocks for inconsistencies.

The other options revolve around invoice processing strategies that do not directly address the situation of avoiding a blocking scenario effectively. For instance, "Park incoming invoice" is useful for temporarily saving invoices for further processing but may still lead to blocking issues if not addressed properly. Inputting the invoice amount based on suggested quantities does not guarantee avoidance of blocks either, as the discrepancies may still arise when compared to the original purchase order. Similarly, reducing the invoice amount to match the original order could address discrepancies but may result in blocking if not handled as a proactive strategy from the outset.