Cancelling train seats booking
The BlankIDs parameter is used for partial booking cancellation in UIT. If the parameter is empty, the entire reservation will be canceled. UFS does not respond to this parameter.
<CancelBook>
<Request>
<RequestBody>
<BookID>18570</BookID>
<!--Optional:-->
<BlankIDs>
<!--Zero or more repetitions:-->
<BlankID>000B38B8-0618F749-0001</BlankID>
</BlankIDs>
</RequestBody>
</Request>
</CancelBook>
Same as the response to request for booking seats in a train.