Title: Data validation error
Last modified: June 16, 2022

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# Data validation error

 *  Resolved [tonyzyc](https://wordpress.org/support/users/tonyzyc/)
 * (@tonyzyc)
 * [3 years, 11 months ago](https://wordpress.org/support/topic/data-validation-error/)
 * Users often report that they cannot submit questions, and the system displays
   the following error “An error occurred when saving your question. Please report
   it to the website administrator. Additional information: Data validation error.”
 * In the Q & A settings, I did not enable reCAPTCHA, why is this happening, and
   how can I fix it?

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [Neo WhiteRabbit](https://wordpress.org/support/users/longnguyen89/)
 * (@longnguyen89)
 * [3 years, 11 months ago](https://wordpress.org/support/topic/data-validation-error/#post-15743777)
 * Hi,
 * Thank you for using CusRev.
 * Did you experience that issue on your end? If you do not enable the reCaptcha
   v3 so there should be an issue with the ajax on your site.
 * You can also follow this solution to troubleshoot the issue [https://help.cusrev.com/support/solutions/articles/43000611175-troubleshooting-plugins-and-themes](https://help.cusrev.com/support/solutions/articles/43000611175-troubleshooting-plugins-and-themes)
 *  Thread Starter [tonyzyc](https://wordpress.org/support/users/tonyzyc/)
 * (@tonyzyc)
 * [3 years, 11 months ago](https://wordpress.org/support/topic/data-validation-error/#post-15745085)
 * I tried submitting questions on different pages, and I did find that there were
   some pages that couldn’t submit questions
 * I use the WP Super Cache plugin to cache pages, and I found that I can successfully
   submit questions after deleting the cache, what is the reason for this?
 * I used the software to compare the code of the old page and the new page (the
   page regenerated after deleting the cache) and found that they have two lines
   of code with different
 * Code in the Ask a question section
    New: <button type=”button” data-nonce=”944ea8a1e0″
   data-product=”698″ data-crcptcha=”” class=”cr-qna-new-q-form-s-b”>Submit</button
   > Old: <button type=”button” data-nonce=”6ffafa6caa” data-product=”698″ data-
   crcptcha=”” class=”cr-qna-new-q-form-s-b”>Submit</button>
 * Code in the Add an answer section
    New: <button type=”button” data-nonce=”a1f560c17b”
   data-product=”698″ data-crcptcha=”” class=”cr-qna-new-q-form-s-b”>Submit</button
   > Old: <button type=”button” data-nonce=”3ae92a80c6″ data-product=”698″ data-
   crcptcha=”” class=”cr-qna-new-q-form-s-b”>Submit</button>
 * It seems that only the value of data-nonce is different, and the others are not
   different
 * What’s the problem?
    -  This reply was modified 3 years, 11 months ago by [tonyzyc](https://wordpress.org/support/users/tonyzyc/).
 *  [Neo WhiteRabbit](https://wordpress.org/support/users/longnguyen89/)
 * (@longnguyen89)
 * [3 years, 10 months ago](https://wordpress.org/support/topic/data-validation-error/#post-15755187)
 * Hi,
 * Thanks for your additional information.
 * Nonces are security tokens in WordPress. They get printed into the HTML source
   code.
    Nonces can only be used once (number used once), and they are only valid
   for a certain length of time: 12 hours by default, but developers can change 
   that value. On a cached page, the nonce can expire in the background while its
   ID is still present in the HTML source code of the page. If that happens, the
   HTML source is referencing an invalid nonce and things break.
 * So you can try to contact WP Super Cache support to not cache the product page
   or the form on this page to avoid this issue.
 *  Plugin Support [cusrev](https://wordpress.org/support/users/cusrev/)
 * (@cusrev)
 * [3 years, 9 months ago](https://wordpress.org/support/topic/data-validation-error/#post-15858285)
 * We haven’t heard from you for more than two weeks. For this reason, I’ll assume
   that either you are not interested in this question/problem anymore or it has
   been resolved. If you still require any help, please start a new forum topic.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Data validation error’ is closed to new replies.

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 * 4 replies
 * 3 participants
 * Last reply from: [cusrev](https://wordpress.org/support/users/cusrev/)
 * Last activity: [3 years, 9 months ago](https://wordpress.org/support/topic/data-validation-error/#post-15858285)
 * Status: resolved