External task multiple process instance order


Is there any documentation about the order of multiple instances of an external task, when using fetch and lock REST API? Is there a way to sort on a custom property of an external task when fetching these?
My usecase is that a particular task has to be done first.

You can use priority.
Assign a high priority to a task and then you can tell the external tasks to fetch based on priority and they’re all ways get the highest one first.

Thanks Niall