Genius for Retail reporting is broad. This is the map of which report answers which question.
The payment exception alerts on the sales dashboard flag transactions that need a human. Clear them daily. Left alone they turn into chargebacks and unmatched deposits, and they are much harder to unpick a month later.
QuickBooks Online is the common accounting route. See the advanced QuickBooks Online session and the QuickBooks Online guides in the Global Payments help center.
Source: Global Payments Genius Retail help center. Newly built article, pending review.