In Acumatica 2018 R2, a Mobile Notification option has been added as a Subscriber to Business Events.
This idea is to add another option called Create Task, bringing the total number of Subscribers to 4:
This would allow you to Create a Task, assign it to someone, and link it to a record.
You can already do this with the Import Scenario subscriber, but it's a little clunky. Here are details: