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【au PAY】I would like to know the causes of errors displayed during the charging process

We will provide the causes and solutions for each error.

For details, please refer to the information below.

Error Code: ER305

Cause: The credit card you entered is not eligible for charging to the au PAY balance.

How to deal with it: Please check the available cards on the page below and register.

Error Code: ER310

Cause: The total monthly charge amount using the credit card exceeds the limit, so you cannot charge the specified amount.

How to deal with it: Please charge within the monthly charge limit or try using a method other than a credit card to charge.

  • From April 1st, 2023, the monthly charge limit from credit cards other than au PAY cards will be changed to 50,000 yen.

Error Code: ER321

Cause: The credit card you entered could not confirm the registration information for the identity verification service (3D Secure 2.0).

How to deal with it: Please register for the identity verification service (3D Secure 2.0) on your credit card company's website.

If you have already registered for the identity verification service (3D Secure 2.0) and are still unable to use it, please contact your credit card issuer to confirm your registered information.

  • Customers who have already registered for the identity verification service (3D Secure) must also register for the identity verification service (3D Secure 2.0).

Error Code: ER323

Cause: Your credit card cannot be used due to restrictions imposed by the credit card company, such as limits on amounts or frequency.

How to deal with it: Please contact your credit card company for details.

Error Code: ER325

Cause: You cannot register the credit card because you have exceeded the permitted number of registrations.

How to deal with it: We apologize for the inconvenience, but please wait a while and try again.

Error Code: ER326

Cause: You cannot register a credit card as multiple charging methods for au PAY.

How to deal with it: Please delete the credit card information registered to another au PAY and then register again.

Error Code: ER327

Cause: The credit card you entered does not support the identity verification service (3D Secure 2.0).

How to deal with it: Please check the usage conditions and register a credit card that supports the identity verification service (3D Secure 2.0).

If you have already registered for the identity verification service (3D Secure 2.0), you may temporarily be unable to use your credit card. We apologize for the inconvenience, but please wait a while and try again.

Error Code: ER505

How to deal with it: If you are trying to charge with your au PAY card, please check if the au PAY card can be used.

For any questions, please contact au Financial Services.

If you are trying to charge with au Easy Payment (combined with data transmission charges), please check your usage limit and restrictions.

  • All of the indicated amounts exclude tax unless otherwise specified.