In addition to monitoring for suspicious activity, what are electronic monitoring systems also valuable for?

"Transaction Monitoring Systems and Ongoing Monitoring: Since the transactional monitoring system is key to mitigating ML risk within the bank, the Committee recognizes that AML risks require more than just appropriate policies and procedures; banks must have adequate and appropriate monitoring systems. For most banks, this will involve an IT monitoring system. If the bank does not believe it needs an IT monitoring system, it should document the rationale for why it does not need one.