Below I have a shipping address form of checkout page and I would like to add another field (P.O. Box) in this form. I tried to look it up every forums and most of the answers were based on overriding.
MagentoCheckoutBlockCheckoutLayoutProcessor.
I checked app/code/company/Checkout/etc/di.xml but wasn’t referencing layoutprocessor.
I am still confused from where this form is getting values from MagentoQuoteApiDataAddressInterface or MagentoCheckoutviewfrontendlayoutcheckout_index_index.xml
how can I add custom field to this form?