Many people have a misconception that the lower the repetition rate, the better. This is true to a certain extent, which shows that your paper is original and repetitive with others, which is worthy of recognition. It is not easy to check the weight of the paper for the first time now, which is worthy of recognition. Paper writing, to put it bluntly, is the statement and summary of scientific research work. In today's society, no one needs to learn from other people's research results and put forward a new thing entirely on their own. Any research is based on other people's research results, summing up, perfecting and carrying forward, just like Newton said, he stood on the shoulders of giants.
If the repetition rate of one or two chapters in a big paper is below 2%, or even less, it means that this is your core research achievement, and it is possible to innovate independently without reference and related research. But the total repetition rate of the paper is 0, which is not a data error, but a problem with your writing.