Error 0x8004D000

Value: -2147168256 | 0x8004D000 | 2147799040

What does it mean ?

XACT_E_ALREADYOTHERSINGLEPHASE  
Another single phase resource manager has already been enlisted in this transaction.
Value: 53248 | 0xD000 | 0b1101000000000000

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

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