Extensibility Request: Replace Option with Enum on Page 7004 "Sales Line Discounts"

[exnihiloo]

Why do you need this change?

On Page 7004 "Sales Line Discounts", the variable is currently defined as an Option, which prevents extensibility.
ItemTypeFilter: Option Item,"Item Discount Group","None";

As this variable is an Option type:
It cannot be extended in extensions
Custom solutions that require additional values must implement workarounds
This limits flexibility and leads to non-upgrade-safe customizations

Benefits
Enables partners to extend filtering options
Improves upgrade safety

Use Case
Our customization requires adding additional filter types, which is currently not possible without replacing standard logic.

Describe the request

Replace the Option type with an extensible Enum, for example:

enum 50XXX "Item Type Filter"
{
    Extensible = true;

    value(0; Item) { }
    value(1; "Item Discount Group") { }
    value(2; None) { }
}

and update the variable inside page
ItemTypeFilter: Enum "Item Type Filter";

[github-actions]

✅ Analysis complete - ready for further processing

---

Implementation:

Add a new extensible enum Item Type Filter with the values Item, Item Discount Group, and None, and update page Sales Line Discounts to use ItemTypeFilter: Enum "Item Type Filter";.

field(ItemTypeFilter; ItemTypeFilter)
{
    ApplicationArea = Basic, Suite;
    Caption = 'Type Filter';
    ToolTip = 'Specifies a filter for which sales line discounts to display.';

    trigger OnValidate()
    begin
        ItemTypeFilterOnAfterValidate();
    end;
}

protected var
    CodeFilter: Text;
    CurrencyCodeFilter: Text;
    SalesCodeFilter: Text;
    SalesTypeFilter: Option Customer,"Customer Discount Group","All Customers",Campaign,"None";
    ItemTypeFilter: Enum "Item Type Filter";
    StartingDateFilter: Text[30];

namespace Microsoft.Sales.Pricing;

enum 7022 "Item Type Filter"
{
    Extensible = true;
    AssignmentCompatibility = true;

    value(0; Item)
    {
        Caption = 'Item';
    }

    value(1; "Item Discount Group")
    {
        Caption = 'Item Discount Group';
    }

    value(2; None)
    {
        Caption = 'None';
    }
}

---

File: SalesLineDiscounts.Page.al

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