Deleting a Custom Property Page
You can delete a custom property page.
To delete a custom property page:
1. Access the object property pages (of the custom object type).
E.g.: an Application property pages.
2. In the menu bar of the property pages, click Customize > '<Name of the page>' page.
3. Click Delete page.
4. In the Work Item field:
• use a Work Item: use the drop-down menu to select the Work item.
• create a Work Item: enter a name
5. (If needed) To close the Work Item, select Close the Work Item.
As long as the Work Item is not closed, it can be reused to add other modifications.
6. (Optional) In the Description pane, enter the description of the Work Item content.
7. Click Apply on all pages.
The page is deleted from all the objects of the same type.

Only the page is deleted. Any attribute created on this page is kept in the repository.