Fill in the correct validity period and security code.

The validity period of your Apple ID is the same as that of your credit or debit card, and you need to fill in the correct month and year. The security code is the three-digit number on the back of your credit or debit card that is used to verify the security of your payment. When filling in your Apple ID, make sure to fill in the validity period and security code correctly to ensure payment and account security.