Error 0x87C51033

Value: -2017128397 | 0x87C51033 | 2277838899

What does it mean ?

UTC_E_MULTIPLE_TIME_TRIGGER_ON_SINGLE_STATE  
Only one Time Trigger is allowed per state
Value: 4147 | 0x1033 | 0b0001000000110011

Where does it come from ?

FACILITY_UTC  
Diagnostic Tracking (Service utcsvc "DiagTrack")
Value: 1989 | 0x7C5 | 0b11111000101

Other Errors for FACILITY_UTC