RE: Creating a Form in AX 2012

You don't need to create a table.

Just create a form with two fields:

1. Item number - create string field and set EDT ItemId

2. Item sales price - create real field and set EDT SalesPrice, AutoDeclaration = YES, AllowEdit = No

3. On Item number field override modified() method and write this code:

public boolean modified()
{
    boolean           ret;

    ret = super();

    ItemSalesPrice.realValue(InventTableModule::find(this.valueStr(), ModuleInventPurchSales::Sales).Price);

    return ret;
}