Allows you to allocate overpayments to outstanding invoices. For more information on overpayments in Xero visit the .
Note:
Create Overpayments using the CreateBankTransaction function.
Refund Overpayments using the CreatePayment function.
Authentication
Authentication values used to connect to the Xero server.
Overpayment id
The OverpaymentID of the overpayment to allocate.
Allocation
The data for the allocation.
OverpaymentAllocation
The overpayment allocation created.