Hello Mun, Hope you're fine Belong to the meaning of the sentence,I think that the most adequate preposition is 'among' Hope this was useful 안녕 ^^

Hello Mun Hwan, My instinct tells me the correct preposition is 'in' but sometimes 'between' or 'among'. I can find no examples of 'discrepancies over' unless it is being used to indicate a period of time, for example, 'there have been a number of discrepancies over the past few weeks' Hope this helps

Discrepancies in :) Use over with disagreements. There have been disagreements over.... Hope that helps :)