Void Request
The Void request references the <cnpTxnId>
of the previously approved transaction. You must structure a Void request as follows.
Example: Online Void Request
<cnpOnlineRequest version="12.0" xmlns="http://www.vantivcnp.com/schema" merchantId="100">
<authentication>
<user>User Name</user>
<password>Password</password>
</authentication>
<void id="1" reportGroup="Void Division">
<cnpTxnId>345454444</cnpTxnId>
</void>
</cnpOnlineRequest>