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I recently clicked “View Users” for many events that our team tracks. I noticed there are identical duplicate events for many users that are happening within seconds of one another. It seems like the events may be firing twice very closely in time.

The event properties are mostly identical. The only consistent difference between the duplicate events is event ID and timestamp. The initial event ID is much shorter in length, while the subsequent event looks standard. The time difference between the two events is sometimes less than 1 second, but typically seems to be no more than 2 seconds apart. Sometimes, I also notice that the device ID and Family, OS are different as well.

This issue seems to display not only in “View Users” but in any charts I make, if I select “Event Totals”. It is not possible for this to naturally be taking place, because many of the events require significant time for users to complete. In addition, our developers confirmed that for each of the main events experiencing this issue, we don’t have more than one event in place, also our system has blocks to prevent spamming of buttons.

What could be the cause of this?

Hi Raga,

Thank you for reaching out, and I appreciate the detailed description you provided about the duplicate events you’re seeing. I understand how confusing it must be to notice identical events firing within seconds of each other, especially since you’ve confirmed that your system has safeguards in place to prevent spamming. I’m happy to help investigate this further.

To narrow down the possible causes, could you please share a few additional details?

1. **Example links:** Could you provide links to a few charts and specific user profiles where you’re seeing this behavior (duplicate events within 1–2 seconds)?
2. **SDK setup:** Which Amplitude SDK (library) and version are you currently using? If possible, please also share your initialization snippet.
3. **Steps to reproduce:** Are you able to reliably reproduce the duplicate events in your product? If so, could you share the product link and the steps we should follow to replicate the issue?

Having these details will allow us to investigate whether the duplicate events are coming from instrumentation, SDK behavior, or another source.

Also, I see that your organization is on a paid plan. If you’d prefer, I can move this conversation into a private Support ticket rather than continuing through Community — just let me know what you’d prefer.

Thanks again for flagging this and for your patience as we dig in. I’ll stay closely engaged until we have clarity on the root cause.

Best regards,
Jacenda


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