A Shopify store is experiencing duplicate sales events in Facebook Ads Manager due to simultaneous use of Meta Pixel and Facebook Conversions API, which is distorting performance metrics.
Root Cause:
Both tracking methods are firing events without proper deduplication parameters
Events lack unique identifiers to merge browser and server-side tracking
Proposed Solutions:
Approach 1 - Direct Audit:
Review current Meta Pixel and Conversions API configuration
Verify event_id parameters are properly implemented
Test event accuracy to ensure clean data flow
Approach 2 - GTM Implementation:
Configure both Meta Pixel and Conversions API through Google Tag Manager
Assign unique event IDs to both browser and server events
GTM automatically merges events with matching IDs to prevent duplicates
Screenshots provided show GTM container setup with event parameters and web container tags for GA4 and CAPI integration
Status: The issue remains unresolved; the original poster is seeking expert assistance to implement proper deduplication.
Summarized with AI on October 30.
AI used: claude-sonnet-4-5-20250929.
We’re currently using Facebook Ads to drive traffic to our Shopify store, and we’ve integrated the Facebook Conversions API alongside the Meta Pixel for improved tracking. However, we’re facing an issue where some sales are appearing as duplicates in our Facebook Ads Manager, which is skewing our data and making it difficult to measure performance accurately.
We’re looking for an expert who can help us troubleshoot and resolve this deduplication issue. Ideally, we’d like someone with experience in Shopify, Facebook Ads Manager, and the Conversions API to ensure proper event tracking and data consistency.
If you have the expertise to help us fix this, please reach out!
Thank you for sharing the details regarding your Facebook Ads tracking setup.
Yes, we can definitely help you troubleshoot and resolve the deduplication issue you’re facing with the Facebook Conversions API and Meta Pixel on your Shopify store.
We will begin by auditing your current Meta Pixel and Conversions API setup on Shopify to identify the source of duplicate events. Next, we will review the deduplication parameters (such as event_id) and ensure the events are properly configured to prevent duplicates. Finally, we’ll run tests to validate event accuracy and ensure clean data flows into Facebook Ads Manager moving forward.
If you’d like guidance, feel free to ask, and the community will be happy to help.
