When actions fail, sometimes it’s complicated to understand why, since no explanation message is presented in PlanIQ.
Thank you for the request.
We are extending the visibility into forecast action executions in one of subsequent updates to PlanIQ.
We have added detailed execution history to Forecast Actions.
See https://help.anaplan.com/981afead-0a75-4441-8684-a319b46ad3b0-View-the-history-of-your-previous-forecast-runs for more details.