Error 0x80042200

Value: -2147212800 | 0x80042200 | 2147754496

What does it mean ?

XML_E_NODEFAULTNS  
This scope has no default namespace. Add a default namespace before continuing.
Value: 8704 | 0x2200 | 0b0010001000000000

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

StackOverflow

Other Errors for FACILITY_ITF