Error 0x000D7168

Value: 881000 | 0x000D7168 | 881000

What does it mean ?

MF_S_WAIT_FOR_POLICY_SET  
Protection for this stream is not guaranteed to be enforced until the MEPolicySet event is fired.
Value: 29032 | 0x7168 | 0b0111000101101000

Where does it come from ?

FACILITY_MEDIASERVER  
Windows Media Server
Value: 13 | 0x00D | 0b00001101

Other Errors for FACILITY_MEDIASERVER