AirflowNetwork - Interzone Windows

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Hi everyone!

I am modeling a house with a interzone window using the AirflowNetwork componente. I setup the simulation and it runs fine, but I always get this warning I don't understand:

* Warning * GetAirflowNetworkInput: AirflowNetwork:Multizone:Zone = BANHEIRO1_11 * ~~~ * has more than one surface defined in AirflowNetwork:MultiZone:Surface, but has the same boundary conditions * ~~~ * Please check inputs of AirflowNetwork:MultiZone:Surface

I know that the interior window I have between two zones is the cause of the problem, but I can't solve it and don't really know if it's a big deal. Any thoughts?

Thanks