Hayashiya argues that this text is probably identical with Shi'er pin shengsi jing 十二品生死經 T753, and regards it as probably an anonymous scripture 失譯經 of the W. Jin 西晋 era (he cites as an example of typical W. Jin phraseology 佛說如是,比丘歡喜稽首而退). Note that this requires a revision of the ascription of T753 to Guṇabhadra 求那跋陀羅. Fajing 法經録 omits the title Shi'er si jing 十二死經 presumably because he identified this title with the Shi'er pin shengsi jing 十二品生死經. Hayashiya thinks Fajing's judgement was probably accurate, because the content of the extant T753 fits the title Shi'er si jing, and indeed, he argues that this title is probably the more accurate of the two. One possible sticking point for the identifcation of the two texts is that Sengyou's CSZJJ section on anonymous assorted scriptures 失譯雑經録 lists them separately, and also notes that in his time, both texts were still extant. This suggests that he may have seen two different texts, but it not entirely reliable, because, Hayashiya claims, Sengyou sometimes classified different titles as different texts without comparing the contents. Zhisheng's KYL partially corrected the prior record by listing this text as an anonymous text of the W. Jin on the basis of stylistic considerations but also kept a separate record of a text ascribed to Guṇabhadra, which Hayashiya regards as erroneous.
Hayashiya examines Dao’an’s list of anonymous scriptures, as “recompiled” by Sengyou under the title 新集安公失譯經錄 at CSZJJ T2145 (LV) 16c7-18c2. The Shi’er si jing 十二死經 is included in the section of the Dao'an/CSZJJ list for texts listed as extant 有; 17b12. Hayashiya gives, in tabulated form, information about the treatment of the same texts in Fajing T2146, LDSBJ T2034, the KYL T2154, and his own opinion about whether or not the text is extant in T, and if so, where (by vol. and page no.). The above text is considered by Hayashiya to be “missing” (闕) from the Taishō edition of the canon. (Cf. also T753.)