<b>SOP: Click deduplication rules</b>

<b>SOP: Click deduplication rules</b>

Purpose: stop the same user from being counted twice and skewing your split-test math.

☐ Step 1 — Set a dedup window. Same click ID inside 24h = one click, not two.
☐ Step 2 — Dedup on click ID first, IP+user-agent second. IP alone over-dedups shared networks.
☐ Step 3 — Decide where a duplicate goes: re-serve the same offer (sticky) so the user sees consistency.
☐ Step 4 — Make routing sticky per user for the window — flipping a returning user to a different offer wrecks attribution.
☐ Step 5 — Exclude duplicates from weight calculations, count them for traffic reporting. They're different numbers.
☐ Step 6 — Watch for a dup rate above 20% — that's a bot or a broken pixel firing twice.

Audit the dup rate weekly; a spike is your earliest fraud signal.