A card authentication (3DS) error occurs
✔️ Does this sound like your issue?
- Payment fails during the card authentication step.
- Error codes such as TS21, TS01, or TS03 appear.
✔️ Please note
- 3DS is an additional identity verification process provided by your card issuer.
- If authentication is not completed properly, payment may not be approved.
- Please check the 3DS settings for your card.
3DS authentication is managed by the card issuer, so ACON is unable to verify your 3DS settings or assist with resolving authentication errors.
If the authentication error persists, please contact your card issuer’s customer service center.
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