Train door at the rear DT car not provenclosed. Opened and closed a few time to no avail. Staff(BGS ) feedback rear DT car A1 door did not open. TC tired to rec ycled train door one more time for train to depart. ~~~~~ #3615 DOOR A1 DID NOT OPEN,PHYSICALLY CHECK CONFIRM FAULT AT REPORTED LOCATION.FURTHER CHECK FOUND DOOR ROLLER WEAR O .C/O ROLLER DONE OK.SECURE/FUNCTION CHECK DOOR CYCLIC CHECK DONE OK.DOOR ABLE TO FUNCTION NORMALLY OPEN/CLOSE. LOW KC/SHAHRIE 27.02.2023