The first arrow should use solid line instead of dotted line
The return dotted line is missing from findNearest to Map, and from Facility to findNearest
Activation bar should only start after the incoming arrow, and terminate immediately after the return arrow. I have circled out instances which this is violated
Return of control to the user at the end of Map is also missing.
For the above diagram, there are a few problems.
findNearest
toMap
, and fromFacility
tofindNearest
Map
is also missing.