Within a Hierarchy, it is expected that the user is not allowed to create new records for data in Sub Object Module Grids. The users are seeing the '+' plus button, leading them to think that this option is available to create a record, however, when the user clicks the button it is not working as expected.
Steps to Reproduce:
Expected Results: The '+' button should NOT appear on a Hierarchy Sub Object Module Grid. The ability to create new records is not supported for Hierarchies, only edit and delete actions.
Actual Results: The '+' button appears and does not work as the user might have expected.
Targeted fix in Release 16.1.2