Can replay create duplicates?
Yes — that is the risk to manage. Replay can repeat downstream Shopify Flow actions, so review side effects before replaying real events.
Recovery
Replay external events into Shopify Flow safely.
Replay is valuable because it gives a second chance. It is risky because Shopify Flow may repeat real business actions.
Why it matters
A retry button can feel reckless without context.
The person replaying the event needs to know whether the original event was accepted, what settings were active, whether the workflow is ready now, and what downstream effects could repeat.
What FlowRelay adds
FlowRelay makes replay something you review first.
Replay starts from retained event context and receipt facts, shows what to check first, and keeps audit history so recovery does not become invisible improvisation.
Evidence to check
Replay preview checklist
The useful evidence is a cautious preview, not a claim that every event is safe to retry.
Original facts
Sender, endpoint settings, trigger family, mapping, and original handoff result are visible.
Replay should begin from the event that actually happened.
Current state
Current endpoint settings and Shopify Flow readiness are checked.
A replay runs against the world as it exists now, not only as it existed then.
Side effects
Duplicate actions are considered before execution.
The cost of replay is usually downstream, not at the intake layer.
Side effects
Replay can repeat business actions.
Shopify Flow may send emails, call apps, create tasks, tag customers, start fulfillment work, or trigger partner systems. Treat replay as recovery, not as a casual resend.
- Check whether the workflow is idempotent before replaying production events.
- Use test events when proving setup, not real events with irreversible outcomes.
- Escalate to Shopify Flow or downstream systems when Delivered already happened and the failure was later.
Questions
Common questions.
When should I not replay?
Do not replay when the event already reached Shopify Flow and the remaining issue is a downstream action that should be handled in Shopify Flow or another system.