As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUEL BLEED LIGHT IN FLIGHT JUST BEFORE CRUISE. APU WAS OFF AND BLEED VALVE WAS OFF. STAYED ON THE WHOLE FLIGHT. DISCONNECTED APU BLEED VALVE CONNECTOR D10434 DUEL BLEED LIGHT EXTINGUISHED. PER WPM 49 52 31. REPLACED APU BLEED AIR VALVE, OPS CHECK NORMAL NO LEAKS NOTED REF MM 49 52 11.