[IMP] pos: update Invoices documentation

[emmi-odoo]

task-5177183

[robodoo]

[auva-odoo]

@emmi-odoo I think a lot of information is missing from the PR, namely:

1. How we can reprint/resend an invoice (can this be done both from the fronted and the backend? How?)
2. Can we do that even if the Invoice check box wasn't enabled on the payment screen
3. Can we create and send the invoice (for the first time) after the payment has been processed? I think this can be done:

• from the frontend (from the Orders view, filter by Paid orders, then click Invoice in the pad on the right to download the invoice, but I dont't think you can send it from there, to be checked!)
• from the backend: we could probably reference the Accounting doc for this process, but it should still be mentionned somewhere

4. Given this list, it might be worth it to check if other things are not missing as well

The doc will probably need to be restructured a bit accordingly as well, given the above and the following elements:

• Would it make sense to have a heading for the section where you explain how to create a global invoice for a specific customer? TBD
• I definitely think we need a Reprint/resend section, that's probably a common need?

Also, I've mentioned this a couple of times now, so I want to be more explicit: please test the features you're documenting, especially when updating older content. Submitting without testing creates a back-and-forth that slows everyone down and makes the whole process less efficient than it needs to be (and more frustrating for everyone). It would really help if this became a habit before submitting for review. 🙏

[emmi-odoo]

Hello @auva-odoo , thank your for your review. Here is the update.

[auva-odoo]

Did you see and understand my previous comment about this? I don't see any reaction or reply to that comment so I'm not sure

[auva-odoo]

I think we should reframe this as generating invoices (whether one per SO or a consolidated one) for multiple sales orders; the consolidation part is just an option IMO:

Suggested change

	To generate a single global invoice for all orders linked to the same customer that are not yet
	invoiced (i.e., invoices with an :guilabel:`Invoice Status` set to :guilabel:`To Invoice`), follow
	these steps:
	To generate invoices for multiple orders from the same customer that are not yet
	invoiced (i.e., invoices with an :guilabel:`Invoice Status` set to :guilabel:`To Invoice`), follow
	these steps:

• note 1: the concept of generating invoices for multiple sales orders is not specific to POS but since it's not documented anywhere in the Accounting doc at the moment, we'll leave it here (there's a task to update the Accounting doc and they'll update this page when they get to it)
• note 2: the part about not yet invoiced could be removed if you decide to add it in the introduction under the main heading Invoice generation

[auva-odoo]

Is there a way to make this automatic? I don't think you answered this question in my first review.

[emmi-odoo]

From what I see, you can send automatic invoice follow-ups (which occur after this first invoice), but there don't appear to be any features to automate invoice sending when selecting a customer.