I have built a flow that uses an HTTP call to the graph after getting an authorization from oauth2. I kept getting intermittent failures so I tried a test batch of 25 and 44% of the runs failed with the error " You do not have the required permissions to access this item, or the item may not exist."
The only thing different for the tests were the name of the plan being created, each one gets a group provisioned first then the final step is a planner plan.
Screenshot of the failures" Image1 All Runs
Screenshot of the error: Image 2 Error message