Error 0x8004292E

Value: -2147210962 | 0x8004292E | 2147756334

What does it mean ?

The requested operation cannot be performed while the virtual disk is merging.
Value: 10542 | 0x292E | 0b0010100100101110

Where does it come from ?

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