It seems that the issue you are encountering in Revit stems from being unable to perform multiple void extrusions when creating a family. You can try the following steps to resolve this:
Check Void Intersections: Ensure that your voids do not intersect. In Revit, intersecting two or more voids can lead to such issues.
Verify Extrusion Direction and Position: Check the directions and start/end positions of your void extrusions. Incorrect settings can cause the extrusion to fail.
Merge Voids: Instead of multiple void extrusions, if possible, create a single void and use it to carve out all desired areas. Using a larger void may achieve the same result.
Verify Work Plane Settings: Make sure you have selected the correct work plane for each void extrusion. Incorrect work plane selection can also lead to such issues.
Reload the Family: After making changes, reload the family into the project. Sometimes this can help resolve issues.
Temporarily Hide Other Voids: Start with a single void extrusion first, then try adding the other voids one by one. This can help identify which void is causing the problem.
