Projects/People - "Not Pushed (Task could not be created in Zoho Projects since there are more than 100 users mapped to this task.)"

I'm the admin for Zoho. Time is set to automatically be pushed to Zoho Projects from Zoho People. This works most of the time.

However, I've received a number of notifications in PDF sent to me via email. which contains a few errors that are described as "Not Pushed (Task could not be created in Zoho Projects since there are more than 100 users mapped to this task.)"

Our tasks do not require a user to be an owner of a task to submit time. I'm not sure why we are getting this error.

The PDF is titled Time Logs Summary (the file name appears to be a serial number):

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