The cash book helps you to manage the entire cash flow of the store through Revenue - Expense transactions
When performing a sales operation, collecting customer debt... the system will automatically generate a receipt in the cash book recorded for this cash flow.
And for payment transactions when importing goods, paying debts to suppliers... the system will also generate a corresponding payment slip to record this operation.
In business, receipts are created when there is an inflow of cash. Payslips are generated when there is a cash outflow.