No samsung wallet is having issues with adding cards for around a month. It is not sbi. Please google search "samsung wallet couldn't register card" and you will find multiple user's with different supported banks with your exact same issue

Samsung wallet is having a lot of issues adding cards.Just google ur issue. U will realize others are having the same issue but with other banks.Me and my friends have had to reset our mobiles to add just our main card with multiple attempts.Don't u...