Title: Form validation error
Last modified: May 28, 2022

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# Form validation error

 *  Resolved [mfe](https://wordpress.org/support/users/mfe/)
 * (@mfe)
 * [4 years ago](https://wordpress.org/support/topic/form-validation-error-2/)
 * Hi
    I have this error in the plugin logs with Mailjet. Anyone know how to solve?
   Thanks in advance
 * 2022-05-28 13:03:24: 0: stdClass Object (
    [ErrorMessage] => Object properties
   invalid [StatusCode] => 400 [ErrorInfo] => stdClass Object ([Properties] => Array([
   0] => stdClass Object ([firstname] => Property not defined

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

 *  Plugin Support [Ibrahim Nasir](https://wordpress.org/support/users/ibrahimkh4l33l/)
 * (@ibrahimkh4l33l)
 * [4 years ago](https://wordpress.org/support/topic/form-validation-error-2/#post-15687695)
 * Hello [@mfe](https://wordpress.org/support/users/mfe/) 👋🏽
 * The error means you are trying to submit a field (firstname) into Mailjet that
   is not properly defined.
 * Are you using our native opt-in forms or a third-party form plugin like Elementor?
 *  Thread Starter [mfe](https://wordpress.org/support/users/mfe/)
 * (@mfe)
 * [4 years ago](https://wordpress.org/support/topic/form-validation-error-2/#post-15688255)
 * Hi [@ibrahimkh4l33l](https://wordpress.org/support/users/ibrahimkh4l33l/)
    I 
   use the native form, I modified the 3 columns header fields, redid the correspondence.
   I have no error in importing contacts but still the same error after validating
   the form. Thanks
 * Email First Name Last Name
 *  Plugin Support [Ibrahim Nasir](https://wordpress.org/support/users/ibrahimkh4l33l/)
 * (@ibrahimkh4l33l)
 * [3 years, 12 months ago](https://wordpress.org/support/topic/form-validation-error-2/#post-15689039)
 * Please send us a ticket at [https://mailoptin.io/support/](https://mailoptin.io/submit-ticket/)
 *  Thread Starter [mfe](https://wordpress.org/support/users/mfe/)
 * (@mfe)
 * [3 years, 12 months ago](https://wordpress.org/support/topic/form-validation-error-2/#post-15689104)
 * Hi,
    Problem solved. Have a good day

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

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

 * ![](https://ps.w.org/mailoptin/assets/icon-256x256.png?rev=1699978)
 * [MailOptin - Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.](https://wordpress.org/plugins/mailoptin/)
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 * 4 replies
 * 2 participants
 * Last reply from: [mfe](https://wordpress.org/support/users/mfe/)
 * Last activity: [3 years, 12 months ago](https://wordpress.org/support/topic/form-validation-error-2/#post-15689104)
 * Status: resolved