3601752 - I cannot delete the dictionary categories "Events", "Processes", "Requirements" and "Others"

I am unable to delete the dictionary categories 'Events', 'Processes', 'Requirements', and 'Others'. When these categories are selected, the delete option is grayed out, even though they are empty.

The categories 'Events', 'Processes', 'Requirements', and 'Others' are default built-in dictionary categories and cannot be deleted, regardless of their content.

Dictionary, Default, Categories, Delete, Glossar, Events, Processes, Requirements, Others , KBA , BPI-SIG-PM-DIC , Dictionary for SAP Signavio Process Manager , Problem