Use this function to allocate part or full amounts of a prepayment to outstanding invoices. For more information on prepayments in Xero visit the .
Note:
Create Prepayments using the CreateBankTransaction function.
Refund Prepayments using the CreatePayment function.
Authentication
Authentication values used to connect to the Xero server.
Prepayment id
The PrepaymentID of the prepayment to allocate.
Allocation
The data for the allocation.
PrepaymentAllocation
The prepayment allocation created.