CORBA3 — Pollable in more than one PollableSet?

The descriptions of Pollable and PollableSet in 7.4 do not indicate if
it is legal to add a Pollable to more than one PollableSet. If this is
made illegal, it is easier to implement Pollable and PollableSet to
cooperate behind the scenes to improve the efficiency of the PollableSet
implementation.

Recommended Resolution:

Make it illegal to add a Pollable to more than one PollableSet, by
adding the following text to 7.4.3.2:

"If the supplied Pollable has already been added to another PollableSet,
this operation raises the standard BAD_PARAM system exception with minor
code XYZ.

and add a new minor code for BAD_PARAM to appendix A:

"XYZ: Attempt to add a Pollable to a second PollableSet."

see above