Error 0x00630006

Value: 6488070 | 0x00630006 | 6488070

What does it mean ?

PEER_S_ALREADY_A_MEMBER  
Already a member.
Value: 6 | 0x0006 | 0b0000000000000110

Where does it come from ?

FACILITY_P2P  
Peer Graphing API
Value: 99 | 0x063 | 0b01100011

Other Errors for FACILITY_P2P