*****Hello everone!

I have first time used MKDirection calculateDirectionsWithCompletionHandler to find distance between two locations.
Below is my code:-

                                      MKDirections *directions =
                                              [[MKDirections alloc] initWithRequest:request];

                                              [directions calculateDirectionsWithCompletionHandler:
                                               ^(MKDirectionsResponse *response, NSError *error) {
                                                   if (error) {
                                                       NSLog(@"Error is%@",error);

                                                       // Handle Error
                                                   } else {
                                                       for (MKRoute *route in response.routes)
                                                       {
                                                           routeDetails=route;
                                                           [self showRoute:response];

                                                           lblDistance.text=[NSString stringWithFormat:@"%.4f meters",route.distance];


                                                       }         }
                                               }];


I am getting this error for some locations:-
Error Domain=MKErrorDomain Code=5 "Directions Not Available" UserInfo=0x1e3f30b0 {NSLocalizedFailureReason=A route could not be determined between these locations., NSLocalizedDescription=Directions Not Available, MKDirectionsErrorCode=1, MKErrorGEOError=-403}

I am not getting the reason why this error is occuring for some locations.