Error 0x8AC70103

Value: -1966669565 | 0x8AC70103 | 2328297731

What does it mean ?

XACTENGINE_E_AUDITION_INVALIDRPCINDEX  
Missing an RPC curve.
Value: 259 | 0x0103 | 0b0000000100000011

Where does it come from ?

FACILITY_XACTENGINE  
Microsoft Cross-Platform Audio Creation Tool (XACT)
Value: 2759 | 0xAC7 | 0b101011000111

Other Errors for FACILITY_XACTENGINE