> ## Documentation Index
> Fetch the complete documentation index at: https://docs.signalbridgedata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Deduplication

> Prevent double-counting across browser and server

Deduplication ensures the same conversion is not counted twice.

## When duplicates happen

* Browser pixel fires
* Server event also fires

If both arrive, platforms may count both unless they share a matching ID.

## How to dedupe

* Generate a unique `event_id` per conversion
* Use the same `event_id` for browser + server

## Recommended

* Always include `event_id` on conversion events (Purchase, Lead, StartTrial).
* Keep IDs stable and UUID-like.