The law is an excerpt from the Sirmondian Constitution 6, just like 16.2.47, 16.5.62, 16.5.63, and 16.5.64. 16.5.63 is dated to 4 August 425 and is also directed to the proconsul of Africa, so this is probably the correct date for the present law. The other excerpts were directed to pretorian prefects of Gauls and Rome and are dated to July; the pretorian prefects should receive the laws before the proconsuls, so the correction of date of the present law is necessary. See Delmaire 2005: 213-14.