(1) Where the spouses have excluded or altered the statutory matrimonial property regime, they may derive from this, in relation to a third party, objections to a legal transaction that was entered into between one of them and the third party only if the marriage contract has been entered in the matrimonial property register of the competent local court or was known to the third party when the legal transaction was entered into; objections to a final and binding judgment which has been pronounced between one of the spouses and the third party are admissible only if the marriage contract was registered or known to the third party at the time when the legal dispute was first pending at court.
(2) The same applies if the spouses set aside or alter by marriage contract a provision made regarding their matrimonial property arrangements that is entered in the matrimonial property register.