"There are certain discrepancies between the two versions of the story."
the state or quality of being discrepant or in disagreement, as by displaying an unexpected or unacceptable difference
DISCREPANT - ANT + ANCY = DISCREPANCY
DISCREPANT - BASE
(usually of two or more objects, accounts, findings etc.) differing; disagreeing; inconsistent
-ANCY - SUFFIX
used to form nouns denoting state or quality