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Changing Duplicatas 
If you need to make a change to a duplicata, you need to first reverse it and then generate a new one:
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1. Display the corresponding open item.
From the SAP Easy Access menu, choose Accounting ® Financial Accounting ® Accounts Receivable ® Account ® Display/Change Line Items.
2. Select the More data pushbutton.
3. Reverse the bill of exchange payment request in the B/e pmnt req. field.
From the Accounts Receivable menu, choose Document ® Reverse ® Individual Reversal.
4. Display the open item again, and go into change mode.
5. Make your change, for example, bank or payment method, and save.
6. Include the open item in a payment run, and the system generates a new duplicata.
The document change administration logs the entire duplicata history – including duplicata changes.
