Functional scope is used to distinguish the nature of expenses, such as manufacturing, management and sales. I wonder if LZ's habit change means that SAP was not used before? If it is made in China before, perhaps the biggest difference is that there are some general expense subjects, such as travel expenses, and there are no detailed subjects under the three expense subjects, only one travel expense subject. The master data of the cost center corresponds to the functional scope. When bookkeeping, the destination of expenses can be determined by travel expense account+cost center (corresponding department or other organization). Management expenses belong to management expenses and sales expenses belong to sales expenses.

As a user of SAP, you need to set the functional scope when maintaining the master data of cost center. You don't need to fill in this when making vouchers, as long as there is a cost center.