Ticket refund.
The structure of the request is the same as the request for obtaining additional information before the delivery of tickets, but with the possibility of transferring the amount of refund fees for each blank.
<RefundBook>
<Request>
<RequestBody>
<BookID>18554</BookID>
<!--Optional:-->
<BlankIDs>
<!--Zero or more repetitions:-->
<BlankID>000B38B8-0618F749-0001</BlankID>
</BlankIDs>
<!--Optional:-->
<Charges>
<Charge>
<Amount>100</ns2:Amount>
<BlankID>000B38B8-0618F749-0001</ns2:BlankID>
</Charge>
</Charges>
<!--Optional:-->
<!--<CheckNumber>?</CheckNumber>-->
</RequestBody>
</Request>
</RefundBook>
The response structure is the same as the response to the request for booking seats in a train.