Error 0x803E0104

Value: -2143420156 | 0x803E0104 | 2151547140

What does it mean ?

WPN_E_DUPLICATE_CHANNEL  
The channel identifier is already tied to another application endpoint.
Value: 260 | 0x0104 | 0b0000000100000100

Where does it come from ?

FACILITY_WPN  
Notification Platform
Value: 62 | 0x03E | 0b00111110

StackOverflow

Other Errors for FACILITY_WPN