* If there is a cluster of URs and you can not figure out the root of the problem, consider leaving the URs open a little longer to see if another UR comes along to provide more information. This may allow you to solve them all or leave a map comment to track.
* Fix another issue in the area. While you may not have solved this issue, make sure we are always improving the map. A good practice is to make at least one improvement in the area (fix/add info to a place, update house numbers, add missing speed limits, etc) when marking a UR as Not Identified - this will help future proof the area.