Why total sum in Daily Sales must be equal zero
Usually, when you create a Sales Receipt, you have certain line items mainly for revenue and then deposit to the bank account.
For example, you have $100 in sales and you’re depositing that $100 to 1 bank account.
In a daily sales register situation, you may have $100 sales but you may have a combination of deposits as well as certain expenses.
For example, you have $100 total sales, $25 expenses and $75 deposit (even to more than one bank account). In that case, you will need to use strictly line items on the sales receipt. Positive and negative (or credits and debits) accounts must be equal zero. It’s writing a Journal Entry in the back-end.