Error 0x88781129

Value: -2005397207 | 0x88781129 | 2289570089

What does it mean ?

DMUS_E_NOARTICULATION  
Articulation missing from instrument in DLS collection.
Value: 4393 | 0x1129 | 0b0001000100101001

Where does it come from ?

FACILITY_DIRECTMUSIC  
Direct Music (part of DirectX) - Audio
Value: 2168 | 0x878 | 0b100001111000

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