xamrin.ios System.InvalidOperationException: Page must not already have a parent.

hello,

I have a tabbed page with 5 pages. In one of the page, I have listview. I want to open tabbed page from lisview click. It works like this.

1. User clicks on listview item, respective data is fetched from server
2. create a new object of new tabbed page and add the page to Children of tabbed page with data.
3. Minimise the current tab by clicking on the home icon given in page.
4. user selects another item from listview now this time its data is fetched for the second page and add as a child to tabbed page

This functionality is fully functional in android. I am having problem in iOS when I try to open second tab after minimizing first tab.

It gives me following error
{System.InvalidOperationException: Page must not already have a parent. at Xamarin.Forms.Internals.NavigationProxy.PushModalAsync (Xamarin.Forms.Page modal, System.Boolean animated) [0x00008] in D:\a\1\s\Xamarin.Forms.Core\NavigationProxy.cs:128 at Xamarin.Forms.Internals.NavigationProxy.PushModalAsync (Xamarin.Forms.Page modal) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\NavigationProxy.cs:122 at RedPoker.Views.Lobby.NewGameLobby+<<GetProtectedCommand>b__10_0>d.MoveNext () [0x00030] in D:\user\...\NewClass.xaml.cs:196 }

Code on Onclick of list item

MultiTab ObjMultiTab = new MultiTab(); // This is second tabbed page i initialize // Get data from server ObjMultiTab.Data = ObjData; int Id = Convert.ToInt32(ObjData.id); if (ActiveList.ContainsKey(Id)) // Dictionary that contains info about index and pageid that are already open { TabId = ActiveList[ObjData.id]; CurrentPage = Children[TabId]; // If user taps on already opend page } else { Count += 1; ActiveList.Add(Id, Count); Children.Add(new SecondTabbedPage(TableData)); // Or add new child CurrentPage = Children[Count]; } await Application.Current.MainPage.Navigation.PushModalAsync(ObjMultiTab); // I receive error here when trying to push second page. First time it gets called successfully.

I have not used NavigationPage here. I directly set first tab page instance to main page.

Is there any ios validation not to open tabbed page from another one ? Pls help

Thank you