Two API calls (report/meetings/ and past_meetings/) return different values of participants_count

[MarcelB (Marcel)]

Description
Using two API calls on the same meeting UUID, I get a different value for participants_count. All the other values are the same.

Error
Which value is correct?

Which App Type (OAuth / Chatbot / JWT / Webhook)?
JWT

Which Endpoint/s?
past_meetings/
report/meetings/

How To Reproduce (If applicable)

GET https://api.zoom.us/v2/past_meetings/660JJWw4R7iHBw4jBKP3HA==
{
“dept”: “”,
“duration”: 243,
“end_time”: “2021-04-18T19:03:32Z”,
“host_id”: “B9gzmBrpTvOybBx1QFmT8A”,
“id”: 86326940711,
“participants_count”: 94,
“source”: “Zoom”,
“start_time”: “2021-04-18T15:00:39Z”,
“topic”: “Immersion : session #104 - Marcel & Sara & Martine”,
“total_minutes”: 8951,
“type”: 2,
“user_email”: “(edited)”,
“user_name”: “M… B…(edited)”,
“uuid”: “660JJWw4R7iHBw4jBKP3HA==”
}

GET https://api.zoom.us/v2/report/meetings/660JJWw4R7iHBw4jBKP3HA==
{
“dept”: “”,
“duration”: 243,
“end_time”: “2021-04-18T19:03:32Z”,
“host_id”: “B9gzmBrpTvOybBx1QFmT8A”,
“id”: 86326940711,
“participants_count”: 185,
“start_time”: “2021-04-18T15:00:39Z”,
“topic”: “Immersion : session #104 - Marcel & Sara & Martine”,
“total_minutes”: 8951,
“tracking_fields”: ,
“type”: 2,
“user_email”: “(edited)”,
“user_name”: “M… B… (edited)”,
“uuid”: “660JJWw4R7iHBw4jBKP3HA==”
}

Screenshots (If applicable)
If applicable, add screenshots to help explain your problem.

Additional context
(*) content has been edited for this post, but values are identical.

[will.zoom (Will)]

Hi @MarcelB,

Thank you for reaching out about this.

I believe that this may be a result of how our Reports endpoint calculates the participant count. Currently, this endpoint will track entries for participants who may have left/rejoined, or been admitted to a waiting room, and then the main meeting.

I believe the past_meetings endpoint tracks unique participants in the count, while the reports endpoint accounts for multiple entries under a given user.

If you’re looking for unique participant count, I believe the past_meetings endpoint would be best.

Let me know if this helps to clarify,
Will