Sales order created in ERP not appearing in TM

Hi all I am doing Domestic Outbound Scenario.

From ERP system I went through SPRO --> Integration with other SAP components --> ----> Activated transfer of sales documents.

I also have assigned output type TRS0 to the same.

When I create the sales order output type TRS0 triggered.

But it is in "not processed state"

When I try to resend I get message "No communication data defined for medium 8".

Any thoughts how to fix this.