Editing Heir apparent (section)

=== Breaching legal qualification of heirs apparent ===
In some jurisdictions, an heir apparent can automatically lose that status by breaching certain constitutional rules. Today, for example:

* A British heir apparent would lose this status if he or she became a Catholic. This is the only religion-based restriction on the heir apparent. Previously, marrying a Catholic also equated to losing this status. However, in October 2011 the governments of the then-16 Commonwealth realms (now 15), of which King [[Charles III]] is monarch, agreed to [[Perth Agreement|remove the restriction on marriage to a Catholic]]. All of the Commonwealth realms subsequently passed [[Succession to the Crown Act 2013|legislation to implement the change]], which fully took effect in March 2015.
* Swedish Crown Princes and Crown Princesses would lose heir apparent status, according to the [[Swedish Act of Succession|Act of Succession]], if they married without approval of the monarch and the [[Government of Sweden|Government]], abandoned the "[[Church of Sweden|pure Evangelical faith]]", or accepted another throne without the approval of the [[Riksdag]].
* Dutch Princes and Princesses of Orange would lose status as heir to the throne if they married without the approval of the [[States General of the Netherlands|States-General]], or simply renounced the right.
* Spanish Princes and Princesses of Asturias would lose status if they married against the express prohibition of the monarch and the [[Cortes Generales|Cortes]].
* Belgian Dukes and Duchesses of Brabant would lose heir apparent status if they married without the consent of the monarch, or became monarch of another country.
* Danish Crown Princes and Princesses would lose status if they married without the permission of the monarch. When the monarch grants permission for a dynast to enter marriage, he may set conditions that must be met for the dynasts and/or their children to gain or maintain a place in the line of succession; this also applies for Crown Princes and Princesses.