Stripe Error: Invalid Expiry Month — What It Means & How to Fix It
The card expiration month is invalid (out of range or malformed).
Common causes
- Data entry typo
- UI formatting mismatch for month input
- Legacy stored value corrupted
How to fix it
- Collect corrected expiry month from customer.
- Add client-side validation for MM format.
- Use tokenized card collection instead of raw form handling.
Should you retry this Stripe error?
Hard decline: Hard decline until corrected card data is provided. RetryKit should send an update-card prompt instead of retrying silently.
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