Dear Users,
We would like to inform you that an enhanced version of the V3 API has been released with format changes that is applicable for Projects, Milestone, Task, Worklog, and Project Member API operations. The older version of the V3 API is marked for EOL (End-Of-Life) by the end of Q3 2021. We highly recommend you switch to the updated version.
To get more information on the changes between the old and the updated version, please refer to the link below.