DBRequestCalls:createRefundInfoArray, Nothing returned from the query

Hi all,

I built a module integration Moneris payment with Interac Online.

After the order is successful, merchant refunds this order via API with data:

<?xml version="1.0"?>
<request>
<store_id>store3</store_id>
<api_token>yesguy</api_token>
<idebit_refund>
<txn_number>344866-0_15</txn_number>
<order_id> magento-99999999999296705425291</order_id>
<crypt_type>7</crypt_type>
<amount>125.00</amount>
</idebit_refund>
</request>

But the response is received is 'DBRequestCalls:createRefundInfoArray, Nothing returned from the query'.

What can I do that?