FB - low Click ID (fbc) matches on purchase event

Topic summary

Issue: Only 33.33% of purchase events are sent with the Facebook click ID (fbc) despite fbc being available for 100% of events. The poster asks how to achieve near-100% fbc transmission and where to place an access token.

Key terms: fbc = Facebook click ID used for attribution. CAPI = Facebook Conversions API (server-to-server event sending).

Update/approach: Enhanced data sharing (another JavaScript pixel) was deemed insufficient for robust CAPI integration. Implementing a data layer and server-side tagging via Elevar resolved the low fbc match for one participant, who reports a noticeable improvement in Facebook campaign performance (no metrics shared).

Open items: Others requested specifics on the improvements (e.g., attribution accuracy, sales attributed) and step-by-step implementation guidance for non-developers. The exact placement/use of the access token was not addressed.

Status: Partially addressed with a recommended solution (Elevar + server-side tagging). Quantified results and implementation details remain unanswered; discussion appears ongoing.

Summarized with AI on January 17. AI used: gpt-5.

Since setting customer data sharing to maximum, we’re sending click id (fbc) for just 33.33% of purchase event instances.

Click id (fbc) is available for 100% of our event instances, so how can we set it up so that it’s sent from our store for 100% of event instances or as close to 100% as possible? We’ve generated an access token - where to put it?

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Did you ever get any insight on this?

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I’d also like to know this.

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Enhanced data sharing is just another JavaScript pixel, so it’s not great for CAPI integration, even though it’s the only option.

I installed a data layer and set up server side tagging using Elevar, and that solved it. I’d recommend doing it properly like this. Their support is great and it’s made a big difference to my FB campaigns.

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Good to hear. What improvements have you seen on your facebook campaigns. Are attribution better and are more sales being attributed to your facebook campaigns/ads?

Hi, Could you give me more details, how did you implement that in your theme, i am not programer