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RebelGoose42 Author

Level 1

11 points

Bad message 400 reason: illegal character CNTL=0x11

I was trying to redeem a gift card and this popped up. How do I fix this?

iPhone 7, iOS 14

Posted on Jan 18, 2021 9:57 PM

Best reply

ryane77

Community Specialist

Posted on Jan 20, 2021 1:59 PM

Hi RebelGoose42,

Thank you for using the Apple Support Communities. It's definitely important to be able to redeem gift cards! We're glad to assist with this issue.

To double-check, is this an Apple/iTunes Store gift card, or one from a third party?

As a start, does it help if you Restart your iPhone and try again?

If the issue is specific to an Apple or iTunes Store gift card, see if any of the steps here help: If you can't redeem your Apple Gift Card or App Store & iTunes Gift Card

Best wishes!

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Bad message 400 reason: illegal character CNTL=0x11

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