Custom Inventory Page in Business Central AL

During my time working with NAV and Business Central, I wrote a fair amount of AL to extend the standard functionality. One common request was custom list pages. The standard ones had too many columns and confused the users who just needed a quick stock check.

Here is a stripped-down example of a custom inventory page:

The Code

page 50100 CustomInventoryPage
{
    PageType = List;
    SourceTable = Item;

    layout
    {
        area(content)
        {
            repeater(Group)
            {
                field("Item No."; "No.")
                {
                    ApplicationArea = All;
                }
                field(Description; Description)
                {
                    ApplicationArea = All;
                }
                field("Inventory"; Inventory)
                {
                    ApplicationArea = All;
                }
            }
        }
    }

    actions
    {
        area(processing)
        {
            action(UpdateInventory)
            {
                ApplicationArea = All;
                Caption = 'Update Inventory';
                Image = Refresh;
                trigger OnAction()
                begin
                    Codeunit.Run(50100, Rec);
                end;
            }
        }
    }
}

How It Works

The page pulls from the standard Item table and only shows what the team actually needed day to day. The UpdateInventory action ran a custom codeunit that handled the business-specific recalculation logic. I have left that out here.

Most of my AL work followed this pattern: take what is already there in the standard, strip it back to what the users need, and bolt on the custom logic as actions or triggers.

If you run into publishing issues, I’ve written up a fix for error code 85132273.