Sorry about asking bunch of question in one day. I am new in this development area and having some problems in implementing few things.I have three feature layers that I need to update in offline mode. On popupsContainerDidFinishViewingPopups method, I am testing the offline status of the device, and if offline then I am writing feature to a text file. There are saperate textfiles for saperate feature layer. Each text file looks like this, basically writing featureset to file."geometryType":"esriGeometryPoint","features":[{"geometry":{"x":456050.74480000045,"y":5001363.0892999982,"spatialReference":{"wkid":26915}},"attributes":{"CostToRepair":"500","USNG":"null","OBJECTID":10003,"Latitude":"null","Notes":"null","Longitude":"null","IndicentID":1,"Structure":2,"Category":1}}],"spatialReference":{"wkid":26915}}The problem I am having is in updating features back from text file. And the way I am doing is this -(IBAction)syncInspections:(id)sender{ NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentDir = [paths1 objectAtIndex:0]; NSString *readPolyFile = [documentDir stringByAppendingPathComponent:@InfraPolygonFile.txt]; NSString *readLineFile = [documentDir stringByAppendingPathComponent:@InfraLinesFile.txt]; NSString *readPointFile = [documentDir stringByAppendingPathComponent:@InfraPointFile.txt]; NSString *addedPolygonString = [NSString stringWithContentsOfFile:readPolyFile encoding:NSUnicodeStringEncoding error:nil] ; NSMutableDictionary *polyDict = [addedPolygonString AGSJSONValue]; NSArray *polyArray = [AGSJSONUtility decodeFromDictionary:polyDict withKey:@features fromClass:[AGSGraphic class]]; if(polyArray.count){ [self.impactPolygon updateFeatures:polyArray]; } NSString *addedPointString = [NSString stringWithContentsOfFile:readPointFile e ncoding:NSUnicodeStringEncoding error:nil] ; NSMutableDictionary *pointDict = [addedPointString AGSJSONValue]; NSArray *pointArray = [AGSJSONUtility decodeFromDictionary:pointDict withKey:@features fromClass:[AGSGraphic class]]; if(pointArray.count){ [self.impactPoints updateFeatures:pointArray]; } NSString *addedLinesString = [NSString stringWithContentsOfFile:readLineFile encoding:NSUnicodeStringEncoding error:nil] ; NSMutableDictionary *linesDict = [addedLinesString AGSJSONValue]; NSArray *linesArray = [AGSJSONUtility decodeFromDictionary:linesDict withKey:@features fromClass:[AGSGraphic class]]; if(linesArray.count){ [self.impactLine updateFeatures:linesArray]; } } - (void)featureLayer:(AGSFeatureLayer *)featureLayer operation:(NSOperation *)op didFailFeatureEditsWithError:(NSError *)error { NSLog(@%@,%@",error.localizedDescription, featureLayer.name); } It works fine if I am updating any one layer at a time, that is by commenting out updateFeatures method of other two layer. But, if I am updating all the three layers in this method, then its giving me error message " 'GET' method not supported" randomly for one of the layer.Is there anything I am doing wrong.Any suggestion appreciated.