AddToCart Event Missing Deduplication Parameter

Hi @brave9 –

We’ve seen a similar issue caused by users adding pixel tracking code/events multiple times.

Could you please double-check that you’re not manually adding a Facebook pixel or Pixel event through your site’s header.php or another Pixel extension (Aside from the Facebook for WooCommerce extension)?

Thanks and looking forward to your reply.

Hi @brave9

Thanks for your question.

Facebook pixel is updated and sending reports. But Still I can not RUN FACEBOOK ADS as it says there is not Pixel on the website.
Where this plugin says I have the pixel set.

Below is the error I am getting on the Events Manager

You’re sending AddToCart events through both your pixel and the Conversions API, but they’re not being deduplicated properly because not enough of these events are receiving an event_id parameter. Event instances sent without an event_id parameter cannot be deduplicated.

This may cause issues with the measurement of your events as well as the attribution and delivery optimization of any ad campaigns that are optimizing for this event.

That’s really odd 🙁

We can confirm that by default, the plugin, intelligently deduplicates events that are sent both from the browser pixel events and server-to-server events (Conversions API) to ensure no double-counted events.

Excerpt from our blog:

With the Facebook for WooCommerce plugin, the same data that flows through Conversions API and the Facebook Pixel is deduplicated based on a unique event ID, so there’s no concern about the same events being double-counted.

This could be an intermittent issue affecting some users as I don’t have a similar issue and it’s not widespread.

However, we have an open bug report regarding this Missing Some Deduplication Parameters and our devs are working to ensure this resolved.

If you have made sure no other plugin that does FB pixel and also no caching plugins that could affect it, for now, I’d suggest manually click “Resolve” or “Ignore” on the Facebook site as we keep monitoring this and working on the above mentioned open issue, and also working with Facebook to ensure the accuracy of the report.

Or as a work around you can temporarily disable the auto pixel injection using the following code snippet:

add_filter( 'facebook_for_woocommerce_integration_pixel_enabled', '__return_false' );

You can use Code Snippet plugin to insert this code.

And then, you can keep Facebook for WooCommerce for the products syncing, while for Facebook pixel, you can use another plugin that does Facebook pixel for example, Facebook for WordPress by Facebook.

I hope that helps!

Hello @brave9,

Thank you so much for the details answer and possible solutions
Today I checked Events Manager and this issue was not there anymore. I mean it was not there in the resolved or anyother place, but altogether vanished.

Great! Good to know that and thanks for letting us know. Since the issue isn’t there anymore, I’m going to mark this as resolved – if you have any further questions, you can start a new thread.

Thanks!