Switching regions and redeeming gifts cards from different countries
How to redeem a US gift card in France as the MacBook Pro has already a balance in Euros and it is not allowing to redeem the US gift card.
MacBook Pro 13", macOS 10.13
Question marked as
Card or code is from a different country or region
App Store & iTunes Gift Cards and Apple Music Gift Cards are specific to your country or region. If you're trying to redeem an App Store & iTunes Gift Card or Apple Music Gift Card that was purchased in a different country or region, make sure that you're redeeming it in the iTunes Store for the same country or region. You can't redeem cards outside of the country or region of purchase. For example, an App Store & iTunes Gift Card purchased in France can't be redeemed in an iTunes Store in the U.S.
When redeeming Apple Music Gift Cards, make sure to redeem the cards in the iTunes Store for the same country or region. You can't change your country or region while you have an active membership.
Learn more about App Store Top-Up cards in China mainland.
If you need more help, contact Apple.