When deleting an element from the Endevor inventory, Endevor doesn't retain records in the inventory allowing to know who deleted the element and when the delete has been performed. The reason Why the delete has been performed should be found in the comment and/or in its related CCID used.
How to track deleted CA Endevor element ?
SMF option allows to records each action and each security violation that occurs during CA Endevor SCM processing.
Activating SMF recording option records each action executed, except for the following actions: Print, Display, Copy, and List.
Element Action records are written out at the end of action processing.
Tech doc: TEC480516
CA Endevor guide : SMF Recording