This can be achieved with a condition in your workflow. Specifically, there is a condition named "Sub-Task Blocking Condition" that you can set to a transition to block the parent from transitioning if its sub-tasks has not reached a certain status in the workflow.
In that way you can block the parent from transitioning to its destination status if its sub-tasks has not reached Closed.
Hope this helps!
Hello, there are some limitations/differences between cloud and server, that doesn't mean that would affect you.
Our company can help you assess that in detail and plan a migration as we have done with others in the past. Whichever answer we give over here might be too generic and wouldn't add much value to you. If you want us to review the case in more detail, contact us via our website
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