Magento 2 can’t checkout


If you encounter the error message ‘Unable to save address, please check input data’ while trying to checkout in Magento 2, it may be related to a PHP setting in Plesk. This post will guide you on how to resolve this issue.

Error Description

During the checkout process, Magento 2 may display the error message ‘Unable to save address, please check input data’. This issue is often linked to PHP configuration settings in Plesk.


To fix this error, you need to adjust a specific PHP setting in Plesk. For detailed information, refer to the solution provided in this GitHub issue comment.

Step-by-Step Guide

1. Access Plesk

Log in to your Plesk control panel.

2. Navigate to PHP Settings

Go to Websites & Domains > PHP Settings for your Magento 2 domain.

3. Update PHP Settings

Check the following settings and update them if necessary:

  • max_input_vars: Increase this value to a higher number, such as 5000 or more.

4. Save Changes

Click OK or Apply to save the changes.

5. Clear Magento Cache

After updating the PHP settings, clear the Magento cache:

  • Go to System > Cache Management in the Magento admin panel.
  • Select all cache types and click Flush Magento Cache.


By adjusting the PHP settings in Plesk, you should be able to resolve the “Unable to save address” error and complete the checkout process in Magento 2 successfully.

Further Assistance

If you continue to experience issues or have any questions, please leave a comment below or reach out for additional support.

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