The HTTP Response Status Code Processor sets the status code for the HTTP response in a transaction attribute that will be used by HTTP listeners when they receive the synchronous response.
Select the Processor Configuration tab and click on Add Processor.
Select the HTTP Response Status Code Processor from the drop-down.
In the Basic tab, you can set:
Status Code: the status code to return in the HTTP response.
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.