What is the difference between TxnNumber and RefNumber when I query receive payments?
And how can I get payment date? I'm seeing three TxnDate field in ReceivePaymentRet.
...
<ReceivePaymentRet> <!-- optional, may repeat -->
...
<TxnNumber >INTTYPE</TxnNumber> <!-- optional -->
...
<TxnDate >DATETYPE</TxnDate> <!-- payment date? -->
...
<RefNumber >INTTYPE</RefNumber> <!-- optional -->
...
<AppliedToTxnRet>
<TxnDate >DATETYPE</TxnDate> <!-- payment date? -->
<LinkedTxn> <!-- optional, may repeat -->
<TxnDate >DATETYPE</TxnDate> <!-- payment date? -->
</LinkedTxn>
</AppliedToTxnRet>
...
</ReceivePaymentRet>