Error 0x80040093

Value: -2147221357 | 0x80040093 | 2147745939

What does it mean ?

IO_WARNING_SOFT_THRESHOLD_REACHED_EX_LUN_POOL  
Disk %2 has crossed a capacity utilization threshold and used %3 bytes. When the threshold was crossed, the pool had %4 bytes of remaining capacity.
Value: 147 | 0x0093 | 0b0000000010010011

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

Other Errors for FACILITY_ITF