An error occurs when increasing followers with an API request

Hello Asana team members

When a system alert is detected, we use Datadog’s Webhook integration to make Asana API requests and create tasks.
Since December, five identical tasks have been created simultaneously.
This issue is reproducible, and currently, simultaneous creation occurs 100% of the time.
Datadog’s Webhook integration is designed to retry four times when an error status is received, which matches the number of simultaneous tasks being created. The tasks are successfully created, but we suspect some kind of error has occurred.
We investigated the issue by adjusting the API request parameters, and found that retries began occurring when the number of followers used to specify collaborators exceeded 12. When the number was below that, tasks seemed to be created successfully, and simultaneous creation was not observed. We’re wondering if there’s a limit on the number of followers.