One or more of the fields chosen have "Include new items in manual filter" selected in the PivotTable. Slicers can only be ...

One or more of the fields chosen have "Include new items in manual filter" selected in the PivotTable. Slicers can only be used with fields where "Include new items in manual filter" is not selected. Click OK to unselect "Include new items in manual filter" for these fields and insert the slicers.