Incremental Refresh not working on Schedule Refresh

Hi lliu_western ,

You should know that:

1. Incremental refresh policies are defined in Power BI Desktop and applied when published to the Power BI service.
2. The first refresh may take longer to import the historical data. Subsequent refreshes can be much quicker because they use incremental refresh.
3. The target of scheduled refresh is to initiate the refresh within 15 minutes of the scheduled time slot, but a delay of up to one hour can occur if the service can't allocate the required resources sooner.

For further information about data refresh, you can refer the following Microsoft documents that could help you:

1. https://docs.microsoft.com/en-us/power-bi/service-premium-incremental-refresh
2. https://docs.microsoft.com/en-us/power-bi/refresh-scheduled-refresh
3. https://docs.microsoft.com/en-us/power-bi/refresh-data

Best Regards,

Yingjie Li

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