What is Advertisement.PlacementState.NotAvaiable and the Status of Placements?

Unity Services
1

What is Advertisement.PlacementState.NotAvaiable and the Status of Placements?
I change the Status to Disabled in the Unity Dashboard → Placements → rewardedVideo,
But Advertisement.GetPlacementState() return state of PlacementState.NotAvaiable.

Is the state transition of the advertisement correct in the following?
Normal:
PlacementState.NotAvailable → PlacementState.Waiting → PlacementState.Ready

The Status is Disabled in the Unity Dashboard → Placements → rewardedVideo:
Advertisement.PlacementState.NotAvailable

Not Advertisement:
Advertisement.PlacementState.NoFill

Thank you.

2

Yes, this looks accurate.

3

Thank you for your answer. I understand that my assumption of the state transition change was accurate.
However, there is one thing I do not understand.
How does the application know if the rewardVideo’s Status is Enabled or Disabled?

Unity Dashboard → Placements → rewardVideo Status

  • Enabled:
    PlacementState.NotAveilable → PlacementState.Waiting → PlacementState.Ready
  • Disabled:
    PlacementState.NotAvailable

Both states are initially NotAvailable.
When GetPlacementState() returns NotAvailable, the application will not be able to determine if the Status of rewardVideo is Enabled or Disabled.