How do I create a discrepancy?
You create a discrepancy on a data item by selecting a study and clicking
Data Management in the navigation bar. Then, select Listings from the
drop-down menu. You can then select a listing, locate the data item with the
possible discrepancy, right-click on it, and select Create Discrepancy. For
full details on creating a discrepancy, see Create discrepancies.
You can also see this video for details: