Train doors not proven closed at front M1 car. TC opened and closed train doors once to clear fault.Fault recurred at BDK2. Staff (KEM) checked and confirmed no abnormalities found on the train doors.ERS-10 ~~~~~ 3611 doors not proven close Check FC 043 Open Close speed pass: Y FOD found: N Door cycle 20x: Y Rubbing marks: N Door Lock Switch Cushion Rubber intact: Y Door Wobble: N Rectification Actions: Checked and found 3611 A4 door with a gap of 65mm. Adjust mounting hanger of saloon doors to 63mm. Conduct door operation ok, Open/Close speed ok and no FOD found. N.A/krishna/haszhan/yanto/03.12.22