Magnetic diffraction Systematic Absences for the group P-3m'1 (#164.89) For this space group, BNS and OG settings coincide. Its label in the OG setting is given as: P-3m'1 (#164.5.1319)
Values of h, k, l:  h integer, k integer, l integer
Systematic absences for special reflections:
Diffraction vector type: (0 0 l) -> Systematic absence: l any