Problem:

I have created a Direct Action. When I want to activate it via Job Options in the Direct Action Overview, I get an error message stating “The direct action cannot be activated because there are no triggers present for the selected object. Create a trigger for the selected object and try again.”

Answer:

Direct Action works out-of-the-box for Accounts, Contacts and Leads; for other objects you first need to create an Apex Trigger in Salesforce. Create an Apex Trigger for each object that you want to use Direct Actions for.

Read more about creating an Apex Trigger for DAP Direct Actions here:
https://plauti.com/support/2154059-sf-direct-actions#create-an-apex-trigger-for-objects-2