Replaying
A replay is a copy of a run with the same payload but against the latest version in that environment. This is useful if something went wrong and you want to try again with the latest version of your code.Replaying from the UI
Select a task, then in the bottom right click “Replay” 

Replaying using the SDK
You can replay a run using the SDK:trigger()
or batchTrigger()
on a task you receive back a run handle which has an id
property. You can use that id
to replay the run.
You can also access the run id from inside a run. You could write this to your database and then replay it later.
Reattempting
Tasks can automatically reattempt based on the settings you provide. Sometimes a task will fail all of its attempts. In that case, you can continue reattempting.This feature will become available during the Developer Preview.