Create many records in a loop

Hi guys:
Is this the best way I am creating new records con my tables? Sometime with more than 40 records some are not saved, if there is a better solution please let me know.
Thank you all.

ItemsForOrders *item;
QUT1 *qut1 = [QUT1 new];
 for (int i = 0; i < [allTableData count]; i++) {
 item = [allTableData objectAtIndex:i];
 qut1.DocEntry = uuid;
 qut1.Status = @"O";
 qut1.ItemCode = item.code;
 qut1.Dscription = item.name; 

 qut1.Quantity = item.quantity;
 qut1.UoM = item.uom;
 qut1.Price = item.price;
 id&lt;IDataStore&gt; dataStore = [backendless.persistenceService of:[QUT1 class]];
 [dataStore save:qut1 responder:nil];
 }

You could use only one ‘save’ call using saver class with one-to-many relation of QUT1 objects, for example:

    class ObjectSaver : NSObject {
        var objectId : String?
        var data : [QUT1]?
    }

and save the saver object with the array of QUT1 objects with method - sync:

    func saveNewObjectsSync(data: [QUT1]) {
        
        var saver = ObjectSaver()
        saver.data = data
       
        let dataStore = backendless.data.of(QUT1.ofClass())
        var error: Fault?
        saver = dataStore.save(saver, fault: &error) as! ObjectSaver
        if error == nil {
            print("Data has been saved: \(saver.objectId)")
        }
        else {
            print("Server reported an error: \(error)")
        }
    }

or async:

    func saveNewObjectsAsync(data: [QUT1]) {
        
        let saver = ObjectSaver()
        saver.data = data
        
        let dataStore = backendless.data.of(QUT1.ofClass())
        dataStore.save(
            saver,
            response: { (result: AnyObject!) -> Void in
                print("Contact has been saved: \((result as! ObjectSaver).objectId)")
                
            },
            error: { (fault: Fault!) -> Void in
                print("Server reported an error: \(fault)")
        })
    }

Thank you so much Vyacheslav Vdovichenko,

Can you post, how to hande my QUT1 object to Data object in Objective C?

Please, here the saver class:

@interface ObjectSaver : NSObject
@property (strong, nonatomic) NSString *objectId;
@property (strong, nonatomic) NSArray&lt;QUT1*&gt; *data;
@end


@implementation ObjectSaver
@end

and sync method:

-(void)saveNewObjectsSync:(NSArray&lt;QUT1*&gt; *)data {
    
    ObjectSaver *saver = [ObjectSaver new];
    saver.data = data;
    
    id &lt;IDataStore&gt; dataStore = [backendless.persistenceService of:QUT1.class];
    
    Fault *error = nil;
    saver = [dataStore save:saver fault:&error];
    if (!error) {
        NSLog(@"Data has been saved: %@", saver.objectId);
    }
    else {
        NSLog(@"Server reported an error: %@", error);
    }
}

Hope you implement an async method yourself.

Sure, thank you so much!!!