I've changed some property names to friendly names using custom code option in Business Object Mapper.

(Plus override GetCustomBindablePropertyDescriptors for these fields)

I've noticed that when this object was bind to a Devexpress Grid with business binding source, these properties were not seen in Devexpress Grid.

I've tested for Devexpress (Wrapped) Textbox. These fields were listed in the BindingField list of the textbox.

What is missing ?

Do you have the same behavior with a DataGridView?  The reason I ask is so that you can determine the source of the issue.  If you have the same behavior in a DataGridView then you are probably missing something else in your BO.  But the IBindingList interface (which is used on on the BBS) uses the type descriptors to determine which fields will be avaialble, so if you have them defined in the GetCustomerBindablePropertyDescriptors then this may be an issue someplace else.