Comment (by Zach Etienne):

@Miguel Zilhão : Baikal does not yet officially support symmetries, hence I didn’t see the same warning (regarding symmetry points) you did. In fact I didn’t see any warnings whatsoever.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2288/leans-boundary-condition-setting-for-bssn