Yes, that how we did it in the past. But as we are connected to Shopify and a thirs party Return application, Shopify creates a new Sales order. I cannot change that part.

I hoped i can do some configuration in ODOO.

Then the problem seems to be in Shopify. But another option: When you make a return, you should get a pop up in Odoo that ask if you want to update the sales order or not. If you don't update the sales order, the result should be that invoiced and delivered qty remains the same. And credit note is not relevant directly.

That would be a solution. But how do i get the pop up when i want to update the sales order ? I have never seen this window.

When you create a return, open the outbound delivery an press 'Return'. The pop up should appear.

Wonderful. Just saw the checkbox what you meant. You made my day :) . Many thanks Lars.

Hi Lars,
i had a funny situation today. Very proud, i explained my finance colleague how to fix the credit note issue. But then she tried and could not see the "Update quantities in SO/PO" checkbox.

It took me a while to understand that the checkbox is only visible when having the debug mode activated.

I tried to look into the stock.picking.form View if i see any invisible='0' for the field to_refund. But i could not find anything.

Do you know how to make this field visible outside the debug mode ?

Thanks

Strange. And did not know, since I always use Developer mode. But I found it.
In the view "Return lines" there is inherited a view "stock.return.picking.stock.account.form"
In this view you find the following code:
<?xml version="1.0"?>
<xpath expr="//field[@name='product_return_moves']/tree" position="inside">
<field name="to_refund" groups="base.group_no_one"/>
</xpath>

group_no_one does not exist in authorisations.

I deleted: groups="base.group_no_one" from the view, and the field is available for all inventory users.

Excellent. It works. Many thanks :)