  As both predictions and measurements of high-energy physics observables
become more precise, controlling all sources of uncertainties in determinations
of parton distribution functions (PDFs) becomes increasingly important. One
source of PDF uncertainty is the result of data not being consistent under a
chosen theoretical framework. In these proceedings we investigate the impact
these inconsistencies present in the global NNPDF4.0 dataset. We show that,
when accounting for missing higher order uncertainties, the missing
contribution to the PDF uncertainty due to data inconsistencies are at the
level of statistical fluctuations.
