If you are looking into solar power or converter hardware controllers, "Paja2" may refer to the secondary author marker of a cited researcher.
: The Promotion of Administrative Justice Act, 2000 .
If you are looking at South African administrative law, "PAJA" is a heavily cited acronym usually followed by a section number (such as Section 2).
: Used in complex phrases such as pajA2 na:A4 ("to go to the paddy field").
If you tell me which of these fields (Biology, Law, Linguistics, or Engineering) you are researching, I can give you the exact text or a specialized summary.