Error 0x887C001B

Value: -2005139429 | 0x887C001B | 2289827867

What does it mean ?

AEERR_MAX_CONNECTIONS_SET  
Maximum number of input or output connections already set on this APO.
Value: 27 | 0x001B | 0b0000000000011011

Where does it come from ?

FACILITY_DIRECT3D11  
Direct3D 11
Value: 2172 | 0x87C | 0b100001111100

Other Errors for FACILITY_DIRECT3D11