Error 0x8009480D

Value: -2146875379 | 0x8009480D | 2148091917

What does it mean ?

CERTSRV_E_SUBJECT_UPN_REQUIRED  
The UPN is unavailable and cannot be added to the Subject Alternate name.
Value: 18445 | 0x480D | 0b0100100000001101

Where does it come from ?

FACILITY_SSPI  
Used for status code returned by Security Support Provider Interface (SSPI)
Value: 9 | 0x009 | 0b00001001

Other Errors for FACILITY_SSPI