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If iTunes cannot process your purchase, you can try the following solutions:
1、Check your payment information: Make sure that your payment method is valid and up to date. If you are using a credit card, ensure that it has not expired and that the billing information is correct.
2、Update your account information: Ensure that your account information is accurate and complete. Update your email address, phone number, and other relevant details if necessary.
3、Restart your device: Sometimes, restarting your device can resolve temporary issues with iTunes.
4、Check your internet connection: Ensure that you have a stable internet connection and that it is not causing the issue. Try connecting to a different Wi-Fi network or using a different device to see if the problem persists.
5、Contact Apple Support: If the issue still persists, you can contact Apple Support for further assistance. They may ask you to provide additional information about your purchase and account to help resolve the issue.
In English, you can say, "iTunes is unable to process my purchase. What should I do?" and the above are possible solutions to this problem.