63CXVerification failed — X tries left

What does APDU response 63CX mean?

Warning: counter value X (0–F), usually the number of remaining attempts after a failed verification.

In an EMV transaction

• Returned to an offline PIN VERIFY with the wrong PIN: 63C2 means two PIN tries remain. The terminal displays “Incorrect PIN” and, if tries remain, may let the cardholder try again (EMV Book 3 §10.5.1).
• 63C0 means no tries remain — the next VERIFY will be refused with 6983.

Decode any value

Paste any SW1 SW2 status word — including proprietary and card-OS specific values — to look it up in the full list.

Related codes