Hi Volodymyr

10 invoices is a lot of work, both in creation and reconciliation, for every stay that would be a nightmare.

The biggest issue is that each journal entry can only have a single date, this means to you need at least N journal entries for an N night stay. However, if you split the accounts receivable across these journals it again becomes difficult to reconcile.

To keep it as a single invoice with a single accounts receivable entry, you could set the income of the room stay product to a suspense account, and any time a journal item was made for this suspense account, create another journal entry for each quantity, one for each day to move from the suspense account to the proper income account:

--- Journal Entry 1, Dated 4 Nov 2018  (Made by the invoice)

Accounts Receivable: 500

Suspense Account: 500

--- Journal Entry 2, Dated 26 Oct 2018 (Made manually or by custom module)

Suspense Account: -50

Income: 50

--- Journal Entry 3, Dated 27 Oct 2018 (Made manually or by custom module)

Suspense Account: -50

Income: 50

And so on, copying journal entry 2 and 3 for the rest of the 10 day period.

Regards,
Jake Robinson

It's all about your definition of the product and corresponding customizations. You can try the hotel management application https://www.odoo.com/apps/modules/11.0/hotel/ or do it yourself by inspecting the code.