Automated task creation in Premium plan

Since the Premium plans are essentially what used to be called Project for the Web projects, I assume that they would need to be updated via the Project Schedule APIs. This means that the updates have to go through the Project Scheduling Service (PSS), not directly via Dataverse table actions. It involves creating an Operation Set, which is then passed to the PSS that's responsible for maintaining transactional consistency.

You can find a very detailed description from this blog post by Antti Pajunen: Project Operations and Project for the web: Schedule API guide for Power Automate users.

Now, for a more simple step-by-step process, this blog post by Leoza Kabir Barker looks like it would cover your needs for task creation in Microsoft Planner Premium plans: Power Automate: Create Project Tasks directly into Project for the Web.

UPDATE: I just tested this in my own tenant and it seems to work just fine. Here's a screenshot of the flow I created, using the above mentioned blog post as guidance.

 

I have roughly the SAME scenario, and have dug into this a lot deeper.

The problem affects the Graph API. The reason Flows and Power-Automate fail on Premium Plans is because they rely on GRAPH and the Planner API is not complete or only has HALF the functionality. You can read a plan, read a bucket and read tasks, but you cannot POST/PUT (Create/Update) anything on a PREMIUM Plan.

I blogged about it here:
https://theofficecontext.com/2024/10/22/403-error-with-planner-api/

And I have added product feedback request here:
https://feedbackportal.microsoft.com/feedback/idea/91794c73-0e87-ef11-9442-6045bdb4f28f

Please, PLEASE, PLEASE, if you are reading this because you are trying to get a Premium Plan to work with your flow or automation OR you are getting a 403 error on a POST/PUT, PLEASE UPVOTE.