You may sometimes have to reject the payments due to some business decisions, and you can keep track of all such rejected payments in the Rejected Payments report.
To not accept/reject payments from customers due to some business decisions, set the virtual account status to Inactive in the Create Virtual Account screen. Any payments initiated after you set the status to Inactive will be rejected, and you can view the details of such transactions in the Rejected Payments section.
To view the rejected payments, go to Auto Collect Dashboard > Transcations > click Rejected Payments.