In the Accounting Settings tab, corresponding accounts for operations are defined.
Accounting settings can be found under Economy→ Accountancy → Settings.
Corresponding accounts can be set for various receivables, payables, and taxes.
For example, when setting account 1701 Accounts Receivable 1 for sales invoices, all sales invoices are automatically posted to the sales account set for the product as well as to the Accounts Receivable 1 account.
Changes are saved by clicking the green "Save changes" button.