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.

For a broader look at the Dynamics stack, see my 2023 roundup covering GP, Business Central and SSIS. If you run into publishing issues, I’ve written up a fix for error code 85132273.