Hi @Viral21 :
Please test my solution2 (I have tested this scenario and it works very well)
1\Create a SharePoint list (It's name must be LineItems2)
2\Delete this formula in OnStart
ClearCollect(LineItems2,
{Title: "Meals for day", ID: "11", Date: DateAdd(Now(), -1, Days), Category: "Food & Beverage", Cost: 100, ReportID: Text("1"), Description: "Breakfast, Lunch, Dinner, and Drinks"},
{Title: "Uber to visit Percy", ID: "10", Date: DateAdd(Now(), -29, Days), Category: "Transportation", Cost: 20, ReportID: "2", Description: "Visited Percy to checkup on things"},
{Title: "Flowers", ID: "9", Date: DateAdd(Now(), -29, Days), Category: "Business Needs", Cost: 40, ReportID: "2", Description: "Striped Carnations"},
{Title: "Rented projector", ID: "8", Date: DateAdd(Now(), -28, Days), Category: "Business Needs", Cost: 30, ReportID: "2", Description: "Needed projector for presentation"},
{Title: "Hotel Room", ID: "7", Date: DateAdd(Now(), -24, Days), Category: "Business Needs", Cost: 1400, ReportID: "2", Description: "Hotel Room for my stay"},
{Title: "Dinner", ID: "6", Date: DateAdd(Now(), -13, Days), Category: "Food & Beverage", Cost: 40, ReportID: "3", Description: "Salmon"},
{Title: "Dinner", ID: "5", Date: DateAdd(Now(), -12, Days), Category: "Food & Beverage", Cost: 40, ReportID: "3", Description: "Steak"},
{Title: "Hotel Room", ID: "4", Date: DateAdd(Now(), -11, Days), Category: "Business Needs", Cost: 600, ReportID: "3", Description: "Hotel Room for my stay"},
{Title: "Meals", ID: "3", Date: DateAdd(Now(), -5, Months), Category: "Food & Beverage", Cost: 1400, ReportID: "4", Description: "All meals throughout trip"},
{Title: "Transportation", ID: "2", Date: DateAdd(Now(), -5, Months), Category: "Transportation", Cost: 400, ReportID: "4", Description: "All transportation throughout trip"},
{Title: "Lodging", ID: "1", Date: DateAdd(Now(), -5, Months), Category: "Business Needs", Cost: 1400, ReportID: "4", Description: "Lodging throughout trip"}
);
3\add the SP list to you APP


4\NewLineItem(Screen)-NewLineItemSaveAndNewButton_2-OnSelect
Collect(LineItems2, {Category: First(DataCardValue26_3.SelectedItems).Value, Cost: Value(DataCardValue27_3.Text), Date: DataCardValue25_3.SelectedDate, Description: DataCardValue29_3.Text, ReportID: SelectedReport2.ID, Title: DataCardValue29_3.Text});
UpdateContext({Defaults: false, DefaultDate: Today(), DefaultTextValue: "1"});
UpdateContext({Defaults: true, DefaultDate: Today(), DefaultTextValue: ""});
ClearCollect(DefaultRecord, "")
5\NewLineItem(Screen)-NewLineitemCreateButton_1-OnSelect
Collect(LineItems2, {Category: First(DataCardValue26_3.SelectedItems).Value, Cost: Value(DataCardValue27_3.Text), Date: DataCardValue25_3.SelectedDate, Description: DataCardValue29_3.Text, ReportID: SelectedReport2.ID, Title: DataCardValue29_3.Text});
UpdateContext({Defaults: false, DefaultDate: Today(), DefaultTextValue: "1"});
UpdateContext({Defaults: true, DefaultDate: Today(), DefaultTextValue: ""});
ClearCollect(DefaultRecord, "");
Navigate(ViewReport,None)
Best Regards,
Bof