Hello,
As of today, Qlik Sense has a retry for task, that you can set in the QMC.
I would rather use a retry at query and connection because it saves a huge amount of time. Let's say we have 10 queries during a task, and the 10th failed for some reason. You will have to reexecute the 10 queries. While with my idea, you will only retry the 10th. I don't have a proposition of syntax but I guess it would come as a parameter of load.
Best regards,
Simon
Bi Consultant (Dataviz & Dataprep) @ Business & Decision