adding payment method
I'm a resident in a different country than the first payment method is active .
I want to add a credit card for the new this region and keeping the old one active ...
This document explains how to add a payment method to your Apple ID on a Mac, Apple mobile devices, PC, or online --> Add a payment method to your Apple ID - Apple Support
Sometimes there can be difficulties in using payment methods from other countries, but the best thing is to just see if you can add it.