How to reconciled AP Trial Balance with Payable Transactions for a period

How to reconcile AP Trial Balance with Payable Transactions for a given period

Get the output of the following for account and period where the difference was observed (In Detail);

1. Now run following reports within Oracle payables

1. Accounts Payable Trial Balance (End of Nov-17)
2. Payables Posted Invoice Register (for that account and for the month of Dec-17)
3. Payables Posted Payment Register (for that account and for the month of Dec-17)
4. Accounts Payable Trial Balance (End of Dec-17)

2. Perform following calculations

1. Accounts Payable Trial Balance (End of Nov-17) Remaining Amount
2. Add : Payables Posted Invoice Register (for that account and for the month of Dec-17) (Accounted Credit-Accounted Debit) 
3. Minus :Payables Posted Payment Register (for that account and for the month of Dec-17) (Accounted Debit-Accounted Credit) 

= Expected Closing Balance of Accounts Payable Trial Balance (End of Dec-17)

3. Confirm this calculated balance matches with Accounts Payable Trial Balance (End of Dec-17)

If there is any difference then you may refer Oracle Doc ID 758531.1 for further analysis