Unapplying Payments
To unapply payments made to an invoice, highlight the invoice to which the payments were applied and select the Unapply action button.
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                     In the OPERA Cloud menu, select Accounts Receivables, and select Manage Accounts Receivables. 
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                     Search for Accounts Receivables. 
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                     From search results, locate and click the amount in the Balance column to open the account. 
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                     On the Manage Account Invoices screen, select the Payments Only check box and click Search. 
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                     Select the payment record. 
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                     Click the Unapply Payment button. 
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                     A popup displays the payment details: - 
                           Date. The posting date of the payment. 
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                           Invoice. The number of the invoice to which the payment was applied, if applicable. 
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                           Code. The transaction code for the payment method. 
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                           Description. The description of the payment method transaction code. 
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                           Original Amount. The full amount of the payment. 
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                           Applied Amount. The amount of the payment applied to the current invoice. (The payment might have been split between invoices with only part of it applied to the current invoice.) 
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                           Reference. Reference information for this payment. The credit card number appears here if a credit card was used for the payment. 
 
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- On the popup, select the payment and click Unapply Selected Payment(s).
Reversing Payments
To reverse or undo a payment that was posted to the account, select the payment and click the Reverse Payment action button. A reverse payment transaction is posted to the account using the payment transaction code of the original payment selected.