A recent home inspection to sell discovered a "double tapped neutral/ground on buss bar" on our panel the should be corrected. It is required that it be corrected by a licensed professional so cannot do it myself.
I have included the photo from the inspection report but can provide more if requested. This is on an a Siemens 200A service panel with a EC2GB grounding bar. There are no free lugs on this grounding bar but there is space on a second bar and room to install an additional bar if needed.