ID:17956 A child cell of the cell named <cell_name> with ID <cell_id> is already placed in location named <placed_loc_name> with ID <placed_loc_id> and that is not a descendant location of the requested location named <desired_loc_name> with ID <desired_loc_id>.

CAUSE: The selected cell cannot be placed as a child cell of the cell is already placed in a location, and that is not a descendant location of the desired location.

ACTION: Unplace the cell and all of its children before attempting to place the cell.