A compound or multi-feature hole. As described by others, Solidworks can only autodimension single hole features or hole wizard holes using the default text in the supplied text file.
While not an ideal solution, you can force-fake it and keep it parametric:
Dimension all hole features, put these dimensions on a separate layer and change the color and remember to turn the layer off prior to printing. Make a leader note pointing to your compound hole and just hyperlink to all the individual dimensions text. Format as required with line breaks, additional manual text, etc.