If a payment is processed but the invoice does not yet exist in Xero, a Prepayment invoice will be created in Xero that can be applied to the invoice when it is eventually synced.

When you  receive a Prepayment from Integrapay you will  see it in your "Watch List".  It will be prefixed as PP_.

Where a payment deposit has a Prepayment and its corresponding Surcharge in it, you need to first apply the payment to that Prepayment and Surcharge.

Step 1:
In Xero, select  Find & Match and search for transaction with Prefix 'PP_' and it will find the transactions for you.

Step 2:
Select the PP transaction and corresponding Surcharge, that match the payment amount.

Step 3:

Select OK.  

Step 4:

You will now see that the transaction will be cleared as it has now been reconciled.

Any balance that is remaining you will then need to push through into the Wise-Pay Clearing account as follows:

Find the Wise-Pay/Integrapay Deposit you want to reconcile.

1.  Choose Create and enter the following information:

2.  Who- Wise-Pay

3.  What- xxx Wise-Pay Clearing Account 

4.  Why- Bulk Deposit

5.  If all matches, Select the OK button. 

Other things to note

Prepayments should not be processed in the same way as Overpayments. Read more about overpayments at What are Overpayments in Xero.

Watch the Wise-Pay "Best Practices" Webinar - Prepayments for more information.