A red triangle is related to the revenue driver. It highlights to you that for some specific segment PMI does not have enough seasons or historical data to calculate the revenue driver.
In this case, PMI looks at the last 50 days to give a suggestion. If you have a new segment PMI will sometimes not be able to suggest because it does not have enough historical data. On days with a red triangle, you should have a closer look and manually edit the pickup if needed.
