Wrong documentation for internal transfer

Hello guys,
I think this page (https://github.com/odoo/documentation-user/blob/12.0/inventory/barcode/operations/internal.rst) is not up to date.

We have a odoo instance v12.0 and when I'm on the home of the barcode application, and I scan the source location, i have an error.

I don't see how i can do a internal transfer only with barcode.

Thank you in advance.
