This is a guest post from Daniel Partridge - who answered an internal enquiry at Microsoft, for a colleague who needed to add a task under a summary using Power Automate (Flow). Great timing as Daniel was also looking at the same challenge.
In Daniel's words and pictures:
In order to accomplish this, I used the “Send and HTTP Request to SharePoint” action in my Power Automate flow, and the end result appears in the schedule as shown in this image:
The flow process would be as follows (*IMPORTANT: The REST API to use for this would be ProjectServer vs. ProjectData in the URL). ProjectData is used for reporting - OData.
Get the Project Id (GUID)
Get the Id (GUID) of the Summary task
Checkout Project - Power Automate Project Online Action
Send HTTP Request to SharePoint - Power Automate SharePoint Action
Check-in and publish Project - Power Automate Project Online Action
The images below show an example using the Power Automate Project Online Action for “Creates new task” which is unnecessary if you are using the Project Summary task or some other task that already exists to link to as the parent task:
Thanks Daniel for sharing, and I hope this helps other people using Power Automate and Project Online to get their tasks flowing into their projects just where they want them!