When evaluating the controls of an EDI application, an IS auditor should PRIMARILY be
concerned with the risk of:

A.
excessive transaction turnaround time.

B.
application interface failure.

C.
improper transaction authorization.

D.
nonvalidated batch totals.

Explanation:

Foremost among the risks associated with electronic data interchange (EDI) is improper
transaction authorization. Since the interaction with the parties is electronic, there is no inherent
authentication. The other choices, although risks, are not assignificant.