I finally found out what was happening. So inside my flow I called a web service. That web service was called generating a WSD Consumer. When a WSD Consumer is created a connector is created for each method. You have to go inside the flow of the connector and drop the response from the pipeline.
The only thing I see I don’t like is that every time I regenerate the connector I have to do this.
#Integration-Server-and-ESB#webMethods