Real Time Feedback:he train door indicator did not light up when doors are open ed. Staff(WDL) checked and confirmed all train doors indicat ors are workng and no abnomalities. ~~~~~ To further rectify.  555/556 replaced all faulty external side lamps. Security/function test - OK.  Aminur/Ridzuan 44220 3556 Real Time Feedback: Passenger feedback train door indicator did not light up when doors are opened. Staff(WDL) confirmed all train doors indicators are working and no abnomalities.  555/556 found the following external lights not working : #3556 A/s, #2555 A/s & # 3555 A/s. OPS 20 raised to follow-up.  Haiqal 44219