What to verify
The Play account country or region must match the country where the card or code was offered.
The gift card currency must match the Play Store currency. A different currency is not a cosmetic difference.
For unreadable or disputed physical cards, Google may request the card back with serial number visible and the receipt.
A physical card bought at a store may require retailer activation. Google cannot activate it on the retailer’s behalf.
Official and primary sources
Issuer policies can change. Open the source before making a decision that depends on current redemption or support terms.