If the "Add provision transactions for Expedia, airbnb and Booking.com" option is enabled in the Xero organisation config, new Xero accounts for the commissions must first be configured under "Account mapping config." The new commission accounts can be found at the bottom of the list.
When exporting the apaleo transactions in Xero, all Airbnb or Expedia bookings posted to a sales account are increased by the fees. Additionally, a new transaction is created between the receivables account (credit account) and the fee account (debit account) and imported in Xero.
For a Booking.com reservation, the Booking.com fees are booked separately to the "Booking.com Commission Account" on the check-out date (or cancellation date). The "Booking.com Counter Account" is used as the offsetting posting account (credit account). As a second posting, the payment fees from Booking.com are posted to the "Booking.com Payment Charge Account". The "Booking.com Counter Account" is used as the offsetting posting account (credit account). If you do not want to post fees for Booking.com, define the same Xero account number for all three accounts and select the "Don't send transactions with the same debitory and creditory account" option in the Xero organisation config.