Hello guys, I was trying to add some existing field of res.partner to the initial checkout form of the ecommerce site but I wasn´t able to add any field normally. Therefore I had to add a XML-HTML customization in the address management Qweb, and I was finally able to add one field to the checkout form, nervertheless when I finish the payment process this field info is not saved in the contact form.

I know there is something missing but I don´t know how to make it work. Currently the field added has the same name as the field in res.partner, but is not saving this info.