The main problem is the correct reading of the cartouche name found within at least six ink inscriptions. Whilst the lower and therefore second hieroglyphic sign is certainly a Ka-symbol, the first sign is illegible. Unfortunately the excavator, Alessandro Barsanti made no facsimiles of the inscriptions and made rather slipshod hand-drawings instead, so that the first hieroglyph remains indecipherable. As a consequence there are several alternative readings of the cartouche name: Kurt Sethe reads Nebka ("His Ka is the lord"), Jean-Philippe Lauer reads Bik-Ka ("his Ka is divine"), Peter Kaplony reads Schena-Ka ("his Ka is forceful") and Gaston Maspero reads Nefer-Ka ("his Ka is beautiful/flawless"). Wolfhart Westendorf even proposes the depiction of a giraffe, an animal that was seen as wise and bedizen with shamanistic powers.Jürgen von Beckerath and George Reisner instead think that the pyramid was planned as the tomb for a well attested prince of the 4th Dynasty named Baka, a son of king Djedefre. Baka's name is written with the hieroglyphs of a ram together with the Ka-symbol. Beckerath assumes that Baka changed his name into Bakarê ("Soul and Ka of Râ") when he ascended the throne but then died unexpectedly, leaving nothing more than an unfinished tomb shaft. Thus, Beckerath and Reisner read the mysterious name at Zawyet El Aryan as Ba-Ka ("His Ka is his Ba"). Aidan Dodson instead sees a sitting Seth-animal and therefore reads the name found in the pyramid as Seth-Ka ("Seth is my Ka"). He believes that the pyramid was planned as the tomb of prince Setka, another son of king Djedefre. Dodson doubts the reading "Baka" and wonders why the cartouche name at Zawyet El Aryan contains no sun-hieroglyph when it was meant to be addressed to the sun god. Either way, both theories, if correct, would place the pyramid of Baka firmly in the 4th Dynasty. Supporting this datation, von Beckerath, Reisner and Dodson point to the architectural features of the burial shaft, in particular the use of hewn granite blocks for bases in such sizes occurs no earlier than the reign of Khufu. Additionally, according to Barsanti, fragments of a similar oval sarcophagus were found in the ruins of the pyramid of Djedefre. Furthermore, von Beckerath, Reisner and Dodson point to the dedication tablet of Djedefre allegedly found by Barsanti near the stairway of the pyramid of Baka as a proof of its 4th Dynasty date.Kurt Sethe, Nabil M.A. Swelim and Wolfgang Helck contradict the former arguments and date the shaft to the late 3rd Dynasty. They point out that, in general, the use of hewn granite as a floor covering in royal tombs was a tradition since the reign of king Khasekhemwy, the last pharaoh of 2nd Dynasty. Furthermore, the tradition of building shaft-like tombs beneath a pyramid was a tradition of the 3rd Dynasty, not of the 4th Dynasty. The alignment of the pyramid complex on a South to North axis was also a common during the 3rd Dynasty. Additionally, W. Helck and Eberhard Otto point out, that the design similarities between the pyramid of Baka and that of Djedefre might be striking, but the design of Djedefre's pyramid was atypical for the 4th Dynasty anyway. Thus, to use Djedefre's tomb design as a comparison argument cannot confirm a 4th Dynasty datation. Finally, egyptologists doubt the evaluations of Barsanti concerning the size of the pyramid base. They think that the pyramid was not so big as Lepsius and Barsanti evaluated. They also doubt the finding of Djedefre's dedication tablet, because this artifact was never published.

Question: Why wasn't Beckerath's tomb finished?
Answer: died