SOAP Sender - RWB "Channel started but inactive"

I have a sender soap channel configured. In Integration Directory the Adapter Status is active. However when I go to Runtime Workbench and view the channel it says the "Channel is started but inactive". Can someone explain to me why it is not active in Runtime Workbench?

Also, SOAP messages sent to this channel are failing obviously because the channel is inactive. How can I make this channel active so that XI can receive SOAP requests.