These Guidelines have grown out of a growing concern in the lack of reproducibility in research particularly in the biomedical sciences. Funders are increasing their requirements as publishers are mandating data sharing.
PLOS has been the first publisher to require that authors show proof that they have shared their data somewhere, by providing the
journal with a unique identifier. If proof is not provided, PLOS can reject the paper outright, or retract it if it has already been published and an author removes the data from public view.
Nature, Science and Cell have language written into their policies that state that data necessary to understand, assess, and extent the conclusions of a manuscript must be shared, and proof of this is required for genomic data.