Question: When was the law that considers the Schwerin branch itself extict compiled?

full_context: Document 1: Duchess Donata of Mecklenburg: Duchess Donata of Mecklenburg (born 11 March 1956) is the senior remaining member of the House of Mecklenburg-Schwerin. Since there are no males left in the family, the Schwerin branch itself is considered extinct due to the Salic law of succession, leaving Mecklenburg-Strelitz as the only remaining line of the House of Mecklenburg.
Document 2: Duchess Cecilie of Mecklenburg-Schwerin: Duchess Cecilie of Mecklenburg-Schwerin (Cecilie Auguste Marie; 20 September 1886 – 6 May 1954) was the last German Crown Princess and Crown Princess of Prussia as the wife of German Crown Prince Wilhelm, the son of German Emperor Wilhelm II.
Document 3: Laws of William the Conqueror: William the conqueror, the first Norman King of England who reigned from 1066 until his death in 1087, created 10 laws for the English people to abide by after the Battle of Hastings.
Document 4: Line of succession to the former Romanian throne: The succession order to the throne of the Romanian monarchy, abolished since 1947, was regulated by the monarchical constitution of 1923 and the 1884 Law of the Romanian Royal House Rules enacted pursuant to the 1866 Constitution of Romania which had confirmed the enthronement of Prince Karl (Carol) of Hohenzollern-Sigmaringen. The defunct 1923 Constitution stipulated Salic law, according to which the throne was hereditary in King Carol I's legitimate descent and, if his male issue failed, in the descent of his brothers of the Sigmaringen princely branch of the House of Hohenzollern, according to agnatic primogeniture and to the perpetual exclusion of females and their descendants. The last monarch to reign in Romania was King Michael I, who was born in 1921, abdicated his throne on 30 December 1947 under coercion, and went into exile in Switzerland.
Document 5: Ancient Celtic women: The position of ancient Celtic women in their society cannot be surely determined due to the quality of the sources. On the one hand, great female Celts are known from mythology and history, on the other hand, their real status in the male-dominated Celtic tribal society was socially and legally constrained. Yet Celtic women were somewhat better placed in inheritance and marriage law than their Greek and Roman contemporaries. The situation of Celtic women on the European mainland is almost entirely transmitted by contemporary Greek and Roman authors, who saw the Celts as barbarians and wrote about them accordingly. Information about Celtic women of the British Isles comes from ancient travel and war narratives, and possibly the orally transmitted myths later reflected in Celtic literature of the Christian era. Written accounts and collections of these myths are only known from the early Middle Ages. Archaeology has revealed something of the Celtic woman through artefacts (particularly grave goods), which can provide clues about their position in society and material culture. Reliefs and sculptures of Celtic women are mainly known from the Gallo-Roman culture. A consistent matriarchy, which was attributed to Celtic women by Romantic authors of the 18th and 19th centuries and by 20th century feminist authors, is not attested in reliable sources.
Document 6: Line of succession to the former Hessian throne: The Electorate of Hesse was abolished in 1866 when it was annexed by the Kingdom of Prussia, while the Grand Duchy of Hesse and by Rhine came to an end in 1918. Like most former German realms of the Holy Roman Empire the succession in Hessian lands was semi-Salic, with the nearest female kinswoman of the last male inheriting the crown upon extinction of the dynasty in the male line. The current pretender to both Hessian thrones is Donatus, Landgrave of Hesse, from the electoral line of the family, which inherited its claim to the grand duchy following the death of Prince Louis of Hesse and by Rhine in 1968. Donatus became head of the House of Hesse on the death of his father, Prince Moritz, in 2013. Landgrave Donatus is the titular Grand Duke and Elector of Hesse.
Document 7: Salic law: Salic law ( or ; Latin: "Lex Salica" ), or Salian Law, was the ancient Salian Frankish civil law code compiled around AD 500 by the first Frankish King, Clovis. Recorded in Latin and in what Dutch linguists describe as one of the earliest known records of Old Dutch, perhaps second only to the Bergakker inscription, it remained the basis of Frankish law throughout the early Medieval period, and influenced future European legal systems. The best-known tenet of the old law is the principle of exclusion of women from inheritance of thrones, fiefs and other property. The Salic laws were arbitrated by a committee appointed and empowered by the King of the Franks. Dozens of manuscripts dating from the 6th to 8th centuries and three emendations as late as the 9th century have survived.
Document 8: Succession to the Danish throne: The Danish Act of Succession, adopted on 27 March 1953, restricts the throne to those descended from Christian X and his wife, Alexandrine of Mecklenburg-Schwerin, through approved marriages. Succession is governed by absolute primogeniture.
Document 9: Grand Ducal Highness: His or Her Grand Ducal Highness (abbreviation: HGDH) is a style of address used by the non-reigning members of some German ruling families headed by a Grand Duke. No currently reigning family employs the style, although it was used most recently by the younger sisters of the late Grand Duchess Charlotte of Luxembourg. Since Grand Duchess Charlotte's marriage to Prince Felix of Bourbon-Parma, all of their male-line descendants have used the style Royal Highness, which he bore.
Document 10: Dorothea of Brandenburg, Duchess of Mecklenburg: Dorothea of Brandenburg (9 February 1420, Berlin – 19 January 1491, Benedictine monastery at Rehna) was a princess of Brandenburg by birth and by marriage Duchess of Mecklenburg.
Document 11: Francia: Francia or Frankia, also called the Kingdom of the Franks (Latin: "Regnum Francorum" ), Frankish Kingdom, Frankish Empire, Frankish Realm or occasionally Frankland, was the territory inhabited and ruled by the Franks, a confederation of West Germanic tribes, during late antiquity and the Early Middle Ages.
Document 12: Frankish language: Frankish (reconstructed Frankish: "*Frenkisk"), Old Franconian or Old Frankish was the West Germanic language spoken by the Franks between the 4th and 8th century. The language itself is poorly attested, but it gave rise to numerous loanwords in Old French. Old Dutch is the term for the Old Franconian dialects spoken in the Low Countries, ie. in present-day Belgium, in the present Netherlands and Western parts of today's Germany until about the 12th century when it evolved into Middle Dutch.
Document 13: Thurn and Taxis line of succession: The House of Thurn and Taxis, a princely dynasty which was sovereign until mediatized in 1806 and its noble status de-recognized following the fall of the German Empire in 1918, exists through several extant lines descending from Alexander Ferdinand, 3rd Prince of Thurn and Taxis. The rule of succession is agnatic primogeniture, which only allowed males to succeed to the main princely title so long as male members of the family survive. The current Head of the House of Thurn and Taxis is Albert, 12th Prince of Thurn and Taxis, whose historic style is "His Serene Highness" Albert, Prince of Thurn and Taxis.
Document 14: Succession to the British throne: Succession to the British throne is determined by descent, gender (for people born before October 2011), legitimacy, and religion. Under common law, the Crown is inherited by a sovereign's children or by a childless sovereign's nearest collateral line. The Bill of Rights 1689 and the Act of Settlement 1701, restrict succession to the throne to the legitimate Protestant descendants of Sophia of Hanover that are in "communion with the Church of England". Spouses of Roman Catholics were disqualified from 1689 until the law was amended in 2015. Protestant descendants of those excluded for being Roman Catholics are eligible.
Document 15: Norwegian Code: The Norwegian Code (Norwegian: "Norske Lov" , abbreviated NL) is the oldest part of the Norwegian law still in force, partially in force in Norway, Iceland, and the Faroe Islands. It was given by Christian V of (Denmark and) Norway on 15 April 1687 and entered into force on 29 September 1688, as the legal code for the Kingdom of Norway including its dependencies (the Faroe Islands, Iceland, and Greenland). Norway was a nominally sovereign kingdom, but politically (although not economically) the weaker part in a personal union with Denmark at the time. The Norwegian Code was largely based on the Danish Code ("Danske Lov", DL), promulgated in 1683 and itself mostly based on older Danish laws, but the Norwegian Code had some differences from the Danish Code in some areas, such as inheritance law, agricultural law, law relating to hunting, fisheries and trade, and military issues. In the 19th and 20th centuries, most of the provisions were gradually repealed as they were replaced by modern laws. The code as such remains in force, and it was last amended on 1 January 1993. As late as the postwar era, the Supreme Courts of Denmark and Norway interpreted identical provisions from the Danish and Norwegian Code respectively; they came to the opposite conclusions regarding the meaning of identical provisions NL 6-10-2 (in force in Norway until 1985) and DL 6-10-2 (still in force in Denmark). The provision is ambiguously worded and regulates compensation for damage caused by livestock and dogs. The Supreme Court of Norway ruled on the meaning of this provision in 1954.
ground_truth: around AD 500