I have a weird situation arising in my app where calling BGTaskScheduler.shared.submit(request) seems to fail silently, without raising any of the BGTaskScheduler.Error's. Here's what's happening. A user registers and submits 5 BGContinuedProcessingTask's, with different ID's using the wildcard. When trying to submit the 6th task like this: try bgTask.submit() //submit task isCreatingBGTask = false // toggle ProgressView off dismiss() //Dismiss the sheet The sheet will dismiss, but the device never gives the haptic feedback, and the task is not visible in the notification centre. Having a maximum number of running tasks makes sense, but why isn't it raising the error BGTaskScheduler.Error(.immediateRunIneligible). It also doesn't seem like there's a way to query the tasks that are in progress (at least I couldn't find a way). So for now I'll just track my own tasks manually, and prevent submission at 5 tasks, but I'm wondering what would happen if another app had 2 tasks going, and then my user tries to submit 3 or something like that.