After parking on the P2 level, there were two doors leading to the elevator. However, there was no sign indicating which door led to the elevator, so I entered the door on the right. Unfortunately, that door led to a stairway, and when I tried to exit, I found the door was locked, and I couldn't get out. I ended up having to ask a passing customer for help by knocking on the glass.
This experience was very inconvenient, and it also raised safety concerns. If the door leads to a stairway, there should have been a clear sign indicating "Stairs," but there was none, which added to the confusion.