Hi all ;
SD process is not logical with outcome account 600016. For me , you can collect freight costs a different account for sd .
For sd configurations , you can benefit from belowed path.
Spro-->SD-->Basic Functions-->Account Assignment/Costing-->Assign G/L Accounts
Details :
http://wiki.scn.sap.com/wiki/display/ERPLO/Revenue+Account+Determination+-+Configuration
Account Determination - Billing (SD-BIL) - SAP Library
Regards.
M.Ozgur Unal