Array index out of bounds on second play?

Development Programming & Scripting C++
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1

I run the game everything works fine.
I Stopped the game and play it again, the editor crashed the out of bound error.

Array index out of bounds: 99 from an array of size 99

	for (auto& SpawnArrayElements : ItemsIDArr) // array can store 100 elements (0, 99)
	{
	SpawnType = SpawnArrayElements.Type;
	SpawnID = SpawnArrayElements.ID; 
	ItemGroupRef->GetAllTransforms(Available); //array has 5  transforms elements
	RandomLocation(Available, Location);
	
		if (UsedLocations.ContainsByPredicate([Location](const FTransform Transform)
		{
			return Transform.GetLocation() == Location.GetLocation()
				&& Transform.GetRotation() == Location.GetRotation()
				&& Transform.GetScale3D() == Location.GetScale3D();
		}))
		{
			RandomLocation(Available, Location);
		}
		else
		{
			RandomLocation(Available, Location);
			SpawnLocation = Location;
			UsedLocations.Add(SpawnLocation);
		}
	}
	ItemsIDArr.Empty();