I sometimes receive a comment from 1-2 of my reviewers saying something similar to "the contributions and novelty of the work/method is limited". Consider it in the context of CS where you develop methods and algorithms which increase the performance of the state-of-the-art in a specific problem/domain.
Of course in every paper, i state my contributions for the reader to understand, but when i receive a general comment like that i get puzzled. Especially when there is no mutual communication between the author and the reviewer to clarify the misunderstandings.
So, let's say, in what typical situation a reviewer might vote for a critism like that?