Present study is an attempt made to investigate the ocuurrence of erraticity be-haviour as a measure of bin multiplicity fluctuations in multiparticle production in relativistic nuclear interaction. The study has been carried out to see the said erraticity behaviour in 16O-AgBr interactions at 4.5A, 14.5A, 60A and 200A GeV/c. Apart from the experimental results analysis has also been done for the AMPT generated events. Results of this analysis reveal that the observed fluc-tuations of multiplicity in pseudorapidity bins have eratic nature. Furthermore, the results indicating suppression of erratic fluctuations for the events having relatively higher multiplicity and this might be hints that this type of analysis may provide some vital information about the dynamical fluctuations occurring due to some new kind of physical processes in relativistic and ultra-relativistic nuclear collisions.