Title: Event Missing Some Deduplication Parameters
Last modified: July 8, 2021

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# Event Missing Some Deduplication Parameters

 *  Resolved [3devo](https://wordpress.org/support/users/3devo/)
 * (@3devo)
 * [5 years ago](https://wordpress.org/support/topic/event-missing-some-deduplication-parameters/)
 * Hi there,
 * I recently installed your plugin in order to activate Facebook Conversion API.
 * The installation was pretty smooth and for a few days, things seemed to work 
   just fine.
 * I now see a message on my Facebook Events page that says:
 * “ViewContent Event Missing Some Deduplication Parameters”
 * That means that Facebook counts this event twice right?
 * Does anyone else have this?
 * Thank you
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fevent-missing-some-deduplication-parameters%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Author [PixelYourSite](https://wordpress.org/support/users/pixelyoursite/)
 * (@pixelyoursite)
 * [5 years ago](https://wordpress.org/support/topic/event-missing-some-deduplication-parameters/#post-14649618)
 * Please check this page, especially the second video there and the last part of
   the text: [https://www.pixelyoursite.com/facebook-conversion-api-capi](https://www.pixelyoursite.com/facebook-conversion-api-capi)
 *  Thread Starter [3devo](https://wordpress.org/support/users/3devo/)
 * (@3devo)
 * [5 years ago](https://wordpress.org/support/topic/event-missing-some-deduplication-parameters/#post-14650698)
 * Hi there,
 * Thank you very much for your response.
 * I followed the troubleshooting process you describe in your video, and during
   my testing event, I noticed 2 things.
 * 1) The pageview event has a deduplicate label next to it which means that Facebook
   recognises it as a deduplicate event. (Then why do I get this message on diagnostics?)
 * 2) The browser’s event didn’t have an ID attached to them at all.
 * In your example, I could see that both the server and the browser events had 
   an ID parameter that for the case of the duplicated events was the same.
 * I am not sure if I am doing something wrong here…
 * Are there any steps I could follow from here to troubleshoot even more?
 * Thank you.
 * Best,
    Manos
 *  Plugin Author [PixelYourSite](https://wordpress.org/support/users/pixelyoursite/)
 * (@pixelyoursite)
 * [5 years ago](https://wordpress.org/support/topic/event-missing-some-deduplication-parameters/#post-14654234)
 * The problem is that you have the Facebook pixel installed by something else, 
   not just our plugin. This can create all sort of issues, including events with
   no deduplication parameters.
 * So you need to remove that extra pixel install.
 *  Thread Starter [3devo](https://wordpress.org/support/users/3devo/)
 * (@3devo)
 * [5 years ago](https://wordpress.org/support/topic/event-missing-some-deduplication-parameters/#post-14654320)
 * Thank you very much for your response!
 * I believe that was the problem indeed. I had manually injected the script into
   the header of the website. I removed it now and have it installed through the
   plugin alone.
 * I run some test events and the results already look much better with all the 
   events have a unique ID and some of them (the deduplicated ones) have the same.
 * I will monitor the issue for a while.
 * Thank you once again.
 * Best,
    Manos

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

The topic ‘Event Missing Some Deduplication Parameters’ is closed to new replies.

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 * 4 replies
 * 2 participants
 * Last reply from: [3devo](https://wordpress.org/support/users/3devo/)
 * Last activity: [5 years ago](https://wordpress.org/support/topic/event-missing-some-deduplication-parameters/#post-14654320)
 * Status: resolved