Hello, Experts!
I'm not possible to create a CR in MDG-M because the CR fields are not available for edit (exception: blocks Change Request, Classification). There is something what confused: for component customizing BS_MAT_OVP_LAYOUT in block "Additional Settings" for "Edit Mode" set value "Read-Only". But the system displayed an error message "Web site can not be displayed error" when I replaced the value on "Edit" and created the CR. Or the reason of this situation is different? Please, help 
Sincerely, Irina
(MDG_FND Release 731)