At the very core, your entity main DAC must have GUID column (NoteID) to reference CSAnswers table and must have field that identify the class of the Entity.

We will make use of Order Type to define list of attributes to gather particular order type-specific information.

Create a Graph Extension for SOOrderTypeMaint Graph and declare data view to define list of attributes for a particular order type. We will be using out-of-box CSAttributeGroupList<TEntityClass, TEntity>

public class SOOrderTypeMaintPXExt : PXGraphExtension<SOOrderTypeMaint>
{
    [PXViewName(PX.Objects.CR.Messages.Attributes)]
    public CSAttributeGroupList<SOOrderType, SOOrder> Mapping;
}

Create a Graph Extension for SOOrderEntry Graph and declare data view for attributes specific to current order type.

public class SOOrderEntryPXExt : PXGraphExtension<SOOrderEntry>
{
    public CRAttributeList<SOOrder> Answers;
}

Create DAC Extension for SOOrder DAC and declare user defined field decorated with CRAttributesField attribute and specify the ClassID field – in our case it is OrderType.

public class SOOrderPXExt : PXCacheExtension<SOOrder>
{
    #region UsrAttributes

    public abstract class usrAttributes : IBqlField { }

    [CRAttributesField(typeof(SOOrder.orderType))]
    public virtual string[] UsrAttributes { get; set; }

    #endregion
}

Modify Order Types page (SO201000) as below using Customization Engine

<px:PXTabItem Text="Attributes">
  <Template>
    <px:PXGrid runat="server" BorderWidth="0px" Height="150px" SkinID="Details" Width="100%" ID="AttributesGrid" 
                MatrixMode="True" DataSourceID="ds">
        <AutoSize Enabled="True" Container="Window" MinHeight="150" />
        <Levels>
            <px:PXGridLevel DataMember="Mapping">
                <RowTemplate>
                    <px:PXSelector runat="server" DataField="AttributeID" FilterByAllFields="True" AllowEdit="True" 
                                    CommitChanges="True" ID="edAttributeID" /></RowTemplate>
                <Columns>
                    <px:PXGridColumn DataField="AttributeID" Width="81px" AutoCallBack="True" LinkCommand="ShowDetails" />
                    <px:PXGridColumn DataField="Description" Width="351px" AllowNull="False" />
                    <px:PXGridColumn DataField="SortOrder" TextAlign="Right" Width="81px" />
                    <px:PXGridColumn DataField="Required" Type="CheckBox" TextAlign="Center" AllowNull="False" />
                    <px:PXGridColumn DataField="CSAttribute__IsInternal" Type="CheckBox" TextAlign="Center" AllowNull="True" />
                    <px:PXGridColumn DataField="ControlType" Type="DropDownList" Width="81px" AllowNull="False" />
                    <px:PXGridColumn DataField="DefaultValue" RenderEditorText="False" Width="100px" AllowNull="True" />
                </Columns>
            </px:PXGridLevel>
        </Levels>
    </px:PXGrid>
  </Template>
</px:PXTabItem>

Modify Sales Orders page (SO301000) as below using Customization Engine

<px:PXTabItem Text="Attributes">
  <Template>
    <px:PXGrid runat="server" ID="PXGridAnswers" Height="200px" SkinID="Inquire" 
                Width="100%" MatrixMode="True" DataSourceID="ds">
        <AutoSize Enabled="True" MinHeight="200" />
        <ActionBar>
            <Actions>
                <Search Enabled="False" />
            </Actions>
        </ActionBar>
        <Mode AllowAddNew="False" AllowDelete="False" AllowColMoving="False" />
        <Levels>
            <px:PXGridLevel DataMember="Answers">                        
                <Columns>
                    <px:PXGridColumn TextAlign="Left" DataField="AttributeID" TextField="AttributeID_description" 
                                        Width="250px" AllowShowHide="False" />
                    <px:PXGridColumn Type="CheckBox" TextAlign="Center" DataField="isRequired" Width="80px" />
                    <px:PXGridColumn DataField="Value" Width="300px" AllowSort="False" AllowShowHide="False" />
                </Columns>
            </px:PXGridLevel>
        </Levels>
    </px:PXGrid>
  </Template>
</px:PXTabItem>

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