Why is my garbage disposal not draining properly and causing my dishwasher to back up?

Your garbage disposal may not be draining properly and causing your dishwasher to back up due to a clog in the drain line or a malfunction in the disposal unit. This can prevent water from flowing freely and cause backups in the dishwasher. It is recommended to check for any blockages in the drain line and ensure the disposal unit is functioning correctly to resolve the issue.