I have tired to used fiddler utilities
unable to understand fiddler result
what i get from fiddler i m paste
GET /ArcGISSERVER/rest/services/network_Test/NAServer/Route/solve?stops=%7b%22features%22%3a%5b%7b%22geometry%22%3a%7b%22x%22%3a303831.809058898%2c%22y%22%3a2763214.26130914%2c%22spatialReference%22%3a%7b%22wkid%22%3a32642%7d%7d%7d%2c%7b%22geometry%22%3a%7b%22x%22%3a304055.883835564%2c%22y%22%3a2763292.20034173%2c%22spatialReference%22%3a%7b%22wkid%22%3a32642%7d%7d%7d%5d%7d&returnDirections=false&returnRoutes=true&returnStops=false&returnBarriers=false&returnPolylineBarriers=false&returnPolygonBarriers=false&outSR=32642&ignoreInvalidLocations=true&preserveFirstStop=true&preserveLastStop=true&useHierarchy=true&outputGeometryPrecision=0&outputGeometryPrecisionUnits=esriUnknownUnits&f=json& HTTP/1.1
GET /ArcGISSERVER/rest/services/network_Test/NAServer/Route/solve?stops={"features":[{"geometry":{"x":303831.809058898,"y":2763214.26130914,"spatialReference":{"wkid":32642}}},{"geometry":{"x":304055.883835564,"y":2763292.20034173,"spatialReference":{"wkid":32642}}}]}&returnDirections=false&returnRoutes=true&returnStops=false&returnBarriers=false&returnPolylineBarriers=false&returnPolygonBarriers=false&outSR=32642&ignoreInvalidLocations=true&preserveFirstStop=true&preserveLastStop=true&useHierarchy=true&outputGeometryPrecision=0&outputGeometryPrecisionUnits=esriUnknownUnits&f=json& HTTP/1.1
{"error":{"code":400,"message":"Unable to complete operation.","details":["Unable to find attribute . Invalid context. NALayer saved on server with token ec21144d19a2405db79d867307031d55_1325852015."]}}
what next to solved this issue