Answers.Body: <p>Mike,  without a customization you can not do this with events/profile.  I am not sure if it can be done using a webform (the webform bypasses the event submission rules) </p>
  
  <p>You can test this, not on your production site, by setting your unsupervised rule to only consider external_ID and see if it works.  I'm curious.   If that works, then you should be able to use force that webform to use a different rule, but I believe that would also be custom.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-03T12:14:35.297Z
Answers.LastActivityDate: 2015-09-03T12:14:35.297Z
Answers.UserDisplayName: pkeogan - BackOffice Thinking
Body: <p>Is is possible using a webform or profile to register for events using only the external id number. Matching the contact via email address (when a user is not logged in) always ends up being messy. </p>
  
Tags: <civievent><webform-civicrm>
Title: Event registration using External Id to match contact.
ThreadText: # Event registration using External Id to match contact.
  
  (Asked by: username_0 on 2015-09-02)
  
  Is is possible using a webform or profile to register for events using only the external id number. Matching the contact via email address (when a user is not logged in) always ends up being messy.
  
  **Tags:** civievent, webform-civicrm
  
  
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  ## 1 answers
  
  ### Answer by username_1 on 2015-09-03. Score: 1
  
  Mike, without a customization you can not do this with events/profile. I am not sure if it can be done using a webform (the webform bypasses the event submission rules)
  
  You can test this, not on your production site, by setting your unsupervised rule to only consider external\_ID and see if it works. I'm curious. If that works, then you should be able to use force that webform to use a different rule, but I believe that would also be custom.
  
  
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