The URL returned after debug is :
215 is the ID for the SKUID product after click edit. Related to Master Data.
Actually this is what i have done until now:
1- Create the Module with new class called SubItems that contains one field referenced to SKUID in SKU Class.
2- Create new custom UI to list all SKU products (Map to exiting .ASPX URL)
3- Create a new UI for SubItems class with Page template = object listing to list all details.
I think something wrong when mapping the master page with its detailed.
What i missed at this stage.