Let's see how to choose left/right with some examples.
Suppose you bought a hot dog on the street. Since it is related to food, the item was related to'food expenses', and the payment was made in'cash'. You can select'Food Expenses' and'Cash' from the items created by the user. I can't tell which one is left and which one is right, but it doesn't matter. You can select each one one by one, but if you try to select'Meal Fee', it is only on the left. On the other side (right) you have no choice but to choose'Cash'.
It is assumed that money came into the paycheck. It is related to profits, but there is a'salary income' item. And perhaps related to this will be the'main transaction passbook' which is an asset item. If you choose two items to choose from, you need to select the right and left as appropriate, but the'salary income' is only on the right. After selecting'Salary Income' on the right, only the left side remains, so the left side naturally becomes the'Main Transaction Account'.
In the two examples above, the choice was relatively easy because one was cost and one was revenue, and it only existed on either side. This time, let's assume the transaction is both an asset/liability.
It is assumed that you have withdrawn cash from your main account. You can see that the
Main Transaction Passbook and
Cash items are related. However, both items are on the left and on the right. If you look closely here, each item has a + and-sign next to it. In other words, as cash has increased due to the cash withdrawal event,
Cash+ is selected on the left, and
Main bankbook- is selected on the right.
Suppose you borrowed money from your friend, Cheol-soo. Cheolsu loaned me money by bank transfer, and the bankbook that the money came in is the'main transaction bankbook'. It is assumed that there is a'money to pay' item in the debt item. You can choose these two items according to your preference. Once the money has been borrowed, the
Main Bankbook' has become +, so selectMain Bankbook+
on the left, and since the amount of money to be paid has increased, selectPayback +` on the right.