Hello Kinjal, thanks for your help, did what you said but it keeps giving the same error, maybe I wasn't clear in what I was trying to accomplish, I created a new module called test_overriding in which I set to load assets.xml on the manifest, in there I have the code you gave me but with the data of this module, then in the same module in static/src/js I have the custom.js file with the code I gave at the beggining. What it seems to happen in my opinion is that I cannot inherit from the payment.payment_form function defined from the payment odoo default module, I'm not sure about this, maybe I'm not doing that correctly or there is another name for it or something? thanks in advance again for all your help

give file path in assets.xml like this

```

<template id="custom_js" inherit_id="web.assets_frontend">
            <xpath expr="." position="inside">
                <script type="text/javascript" src="/<path>/static/src/js/payment_form.js" />
            </xpath>
        </template>

and write 

"odoo.define('test_overriding.test', function (require) {" line instead of " odoo.define('test_overriding.test', function (require) ) {"