The Blank XML Into Data Processor puts blank XML (<blank />) into the transaction data.
Select the Processor Configuration tab and click on Add Processor.
Select the Blank XML Into Data Processor from the drop down.
In the Conditional Execution tab, you can set additional processor execution conditions. The Transaction data dependent condition may be specified here as enhanced expression. If this expression returns anything other than TRUE (ignore case) – this processor will be skipped. No additional configuration for this Processor is required.