I really encountered a challenging case while doing account reconciliation of a company. Its documents are very complex. On the on hand, there are some items entered in the QBs but are not in the bank statement. On the other hand, there are some items in the bank statement but are not in the QBs. Furthermore, the owner uses various cash accounts for both business and personal purposes, and cash is mutually transferred among those accounts. Finally, with my boss help, I understood how to solve that problem. This is really a perfect example for me to practice how to reconcile an account in real life.