Oliver Cowdery wrote acquisition in the printer’s manuscript, an error for the phonetically and orthographically similar accusation. This error probably occurred early in the transmission of the text, either as Joseph Smith dictated the text or as Oliver copied it from 𝓞 into 𝓟. The 1830 typesetter corrected the text to the obviously correct accusation. The word acquisition occurs nowhere in the scriptures, but accusation does (ten times in the King James Bible). In fact, the phraseology in Mosiah 17:7 parallels a passage in the King James Bible that describes an attempt to accuse Jesus of breaking the law:
It should also be noted that there is no meaning for acquisition in the Oxford English Dictionary that would work for the context here in Mosiah 17:7.
Summary: Retain the 1830 typesetter’s correction of acquisition to the obviously correct accusation in Mosiah 17:7.