The position is the basis for valuation flows when working with security transactions. The position is the quantity of securities that are held in a portfolio at a given point in time. The valuation flows are the cash flows that are generated by valuing the position based on market data and valuation rules. Reference: https://help.sap.com/viewer/0fa84c9d9c634132b7c4abb9ffdd8f06/2020.002/en-US/3a3a8f6f7a6e4c2b8d5b8f1e2a2a0d5b.html

The types of payments that can be processed with the Automatic Payment Transactions for Payment Requests app are in-house cash payments and freeform payments. The Automatic Payment Transactions for Payment Requests app is a SAP Fiori app that allows you to process payment requests from various sources, such as Treasury, Travel Management, or third-party systems. In-house cash payments are payment requests that are processed by using SAP In-House Cash as an internal payment provider. Freeform payments are payment requests that do not have any reference documents or invoices in SAP S/4HANA. Reference: https://help.sap.com/viewer/0fa84c9d9c634132b7c4abb9ffdd8f06/2020_002/en-US/f22248cc13f74872af15bd2eca741110.html

When defining payment methods, the payment ranking order is a setting that is made at country level. The payment ranking order determines the priority of payment methods for clearing open items within a country. The payment method with the lowest ranking order number has the highest priority and is selected first. Reference: https://help.sap.com/viewer/0fa84c9d9c634132b7c4abb9ffdd8f06/2020.002/en-US/3a3a8f6f7a6e4c2b8d5b8f1e2a2a0d5b.html