The document discusses testing a request from Postman and observing the response. It then instructs to delete a "byte-array-to-string-transformer" component so that the payload type changes from a string to a stream. When testing with the same request again, the payload type filter will now reject the message since the payload type is no longer a string, resulting in the response "Payload Filter Rejected the message!!".

5. Lets Hit any request from postman
You will get a response as “Input Request Processed Successfully !!”

6. Now DELETE “byte-array-to-string-transformer” so that the Payload TYPE changes from String to stream.
Changes should look like below diagram.
Save the changes and Test with the same request.

7. Send the same request and you will observe that Payload Type Filter will Reject the Message because the
Payload TYPE is not String anymore.
You will get response as: “Payload Filter Rejected the message !!”