Improvement on the P&L report (Profit and Loss Statement)

Faced such a problem. The P&L report in the system is not working correctly. The data should display the sums of business processes for the sale of goods or services, as well as the amounts of obligations to suppliers (that is, amounts in the form of Income or Expenses), and at the end of the report show the difference in the form of profit for a certain period. But not the Amounts of Actual payments for these processes, since actual payments do not form a Profit Statement. The essence of the report is the correlation of income and expenses within the reporting period. But Actual payments and cash flow is already a Cash Flow report The P&L report must be able to display data as described above.