The document's validity is questionable. While some claim the earliest text concerning the alleged agreement came from the second half of the 14th century others call it a late medieval forgery, not a twelfth-century source. While various items of the text seem anachronistic to some, other historians say these could be reworkings of a text from an actual agreement. Hungarian historian
János Karácsonyi thought it was a 14th-century forgery, Slovene historian
Ljudmil Hauptmann dated the document to the 13th century, Croatian historians
Miho Barada and
Marko Kostrenčić thought it was made in 1102, while later Croatian historian
Nada Klaić thought it was a forgery probably made in the 14th century. Croatian historian
Stjepan Antoljak in turn said the
Pacta was an incomplete historical source, but not a forgery. The dispute and uncertainty over the
Pacta conventa matches the overall uncertainty and dispute over the relationship between the Croatian and Hungarian kingdoms in the 10th and 11th century, with Croatian historian
Ferdo Šišić and his followers assuming
Tomislav of Croatia had ruled most of the area inhabited by Croats, including
Slavonia, while the Hungarian historians
Gyula Kristó,
Bálint Hóman and János Karácsonyi thought the area between
Drava and
Sava belonged neither to Croatia nor to Hungary at the time, an opinion that Nada Klaić said she would not preclude, because the generic name "Slavonia" (lit. the land of the Slavs) may have implied so. Though the validity of the document is disputed, there was at least a non-written agreement that regulated the relations between Hungary and Croatia in approximately the same way, since from 1102 until 1918 kings of Hungary were also kings of Croatia, represented by a governor (ban), but Croatia kept its own parliament (Sabor) and considerable autonomy. The source of inspiration for the text of the document must have been the political and social developments that had taken place over a 300-year period following 1102 when the two kingdoms united under the Hungarian king, either by the choice of the Croat nobility or by Hungarian force. The Croatian nobility retained its laws and privileges including the restriction of military service that they owed to the king within the boundaries of Croatia. ==Interpretations of the agreement==