Mistake: conversions counted twice

Mistake: conversions counted twice

Failure mode: your tracker reports more conversions than the network. The network fires the postback on its own retry schedule, and your cid/clickid dedup window is too loose — so retries land as new conversions.

Fix — 4 steps:
— Open postback logs, sort by clickid. If the same id appears 2+ times with identical payout, you have duplicate firing.
— Set deduplication to key on clickid + conversion status, not on timestamp.
— In Keitaro: enable "Forbid conversion duplication" on the campaign. In Voluum: confirm the postback uses a unique transaction ID token, not a static one.
— For sales/upsell flows that legitimately fire twice, route them as a separate event type (deposit vs reg), never as duplicate of the same event.

Verify: replay one postback URL manually in a browser. It should register the first time, and return a "duplicate" or no-op the second time.

Save this SOP. Run this before every launch.