Delete custom object action step is not available in program

Hi All,

I am implementing a functionality where program will be deleting existing custom object contacts based on some criteria. However I realized after following whole manual that there is no as such option or action is available, while in below manual link it's showing.

https://community.oracle.com/topliners/discussion/4351935/deleting-all-cdo-records-attached-to-an-existing-contact

Suggestion are welcome.

Regards,

Richa