Cash Flow 
The cash flow is calculated in financial mathematics using the payment structure variant, the financing view, and the calculation procedure. It forms the basis for various payment schedules that are calculated by different financing views. The cash flow is saved to the database and is therefore always available for calculating payment schedules. This remains the case until you execute a change process that necessitates the calculation of a new cash flow. In a lease, the cash flow is displayed at item level.
The cash flow runs parallel to the payment structure variant.
You have made settings in the following Customizing activities:
Variants and Additional Flows
Financing Views
Configure FIMA Calculation Procedure