Error 0x8004101F

Value: -2147217377 | 0x8004101F | 2147749919

What does it mean ?

SYNC_E_DATA_MODIFIED_CONCURRENTLY  
The operation could not be completed as an item changed unexpectedly during synchronization.
Value: 4127 | 0x101F | 0b0001000000011111

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