Policy Pages Reference : Networking policy settings : Outbound QoS interfaces : Version Incompatibilities for Outbound QoS Interfaces
  
Version Incompatibilities for Outbound QoS Interfaces
SCC 9.0 an later don’t support outbound QoS interface-policy pushes for SteelHead 9.0.x or SteelHead EX 3.6.x. If you’re running this version of the software on your remote appliance, you must migrate your QoS policies to simplified QoS on the SCC. For detailed information about QoS best practices, see QoS migration.
Only SteelHead 8.x.x and SteelHead EX 3.5.x and lower is supported for this feature. If you’re running these versions of the software, you have limited QoS functionality. We recommend you upgrade to simplified QoS. For detailed information about migrating QoS, see Migrating legacy QoS policies.