There are several reasons that the driving directions could show up incorrectly:

• The starting or destination address was entered incorrectly. Check to make sure each address can be correctly identified by mapping each separately.
• The routing database has an incorrect geocode for either the starting or destination address; therefore, it is routing to or from the wrong location.
• The routing database doesn't have a reference to one or both of the addresses, and therefore cannot create the route. Check to make sure each address can be correctly identified by mapping each separately.