Answers.Body: <p>We had a similar issue and tried several tests to resolve the issue. Checked all Anonymous Roles to YES, not this problem. Turned off all WordPress Plugins, not this problem. Changes theme, BINGO!</p>
  
  <p>There was a conflict with one of the JQuery/Lightbox type page overlay option within our theme that cause the forms not to submit. Removing that option fixed the issue.</p>
  
  <p>The overlay window was loading a separate page and somehow it was loading the Registration form too!</p>
  
  <p>So, Theme conflict in WordPress.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-11-13T06:43:27.037Z
Answers.LastActivityDate: 2018-11-13T06:43:27.037Z
Answers.UserDisplayName: Kevin V
Answers.Body: <p>Did a bit of googling and figured this one out -- I didn't realize I needed to visit the access control screen [Administer / Users and permissions / Permissions (access control)] in order to enable the form to accept user input on submit.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-01-26T03:01:27.890Z
Answers.LastActivityDate: 2017-01-26T03:01:27.890Z
Answers.UserDisplayName: Prónay
Answers.Body: <p>I think the error is highlighting that the information your requesting from participants doesn't include</p>
  
  <p>First Name AND Last Name
  OR
  Email address.</p>
  
  <p>If you could confirm the registration form has these or provide a link to the registration form it should make it easier to identify.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-01-25T16:25:59.443Z
Answers.LastActivityDate: 2017-01-25T16:25:59.443Z
Answers.UserDisplayName: Parvez Saleh
Body: <p>Event registration form on Civi 4.7.15 (WP 4.7.1) keeps throwing this mandatory fields missing error, even though all fields are filled in with good values.<a href="https://i.sstatic.net/QsWYV.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/QsWYV.png" alt="Mandatory fields missing error"></a></p>
  
  <p>Happens on empty cache and regardless what values I put in the form fields. I'm stumped.</p>
  
  <p>(See also <a href="https://civicrm.stackexchange.com/questions/16366/error-mandatory-fields-first-name-and-last-name-or-email-address-are-missing">this thread</a>.)</p>
  
Tags: <civievent><fields><activity>
Title: Bogus Error Mandatory fields first name and last name OR email address missing from form
ThreadText: # Bogus Error Mandatory fields first name and last name OR email address missing from form
  
  (Asked by: username_0 on 2017-01-23)
  
  Event registration form on Civi 4.7.15 (WP 4.7.1) keeps throwing this mandatory fields missing error, even though all fields are filled in with good values.[![Mandatory fields missing error](https://i.sstatic.net/QsWYV.png)](https://i.sstatic.net/QsWYV.png)
  
  Happens on empty cache and regardless what values I put in the form fields. I'm stumped.
  
  (See also [this thread](https://civicrm.stackexchange.com/questions/16366/error-mandatory-fields-first-name-and-last-name-or-email-address-are-missing).)
  
  **Tags:** civievent, fields, activity
  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_1 on 2018-11-13. Score: 2
  
  We had a similar issue and tried several tests to resolve the issue. Checked all Anonymous Roles to YES, not this problem. Turned off all WordPress Plugins, not this problem. Changes theme, BINGO!
  
  There was a conflict with one of the JQuery/Lightbox type page overlay option within our theme that cause the forms not to submit. Removing that option fixed the issue.
  
  The overlay window was loading a separate page and somehow it was loading the Registration form too!
  
  So, Theme conflict in WordPress.
  
  
  ---
  
  ### Answer by username_0 on 2017-01-26. Score: 2
  
  Did a bit of googling and figured this one out -- I didn't realize I needed to visit the access control screen [Administer / Users and permissions / Permissions (access control)] in order to enable the form to accept user input on submit.
  
  
  ---
  
  ### Answer by username_2 on 2017-01-25. Score: 0
  
  I think the error is highlighting that the information your requesting from participants doesn't include
  
  First Name AND Last Name
  OR
  Email address.
  
  If you could confirm the registration form has these or provide a link to the registration form it should make it easier to identify.
  
  
  ---
  
  