Einmal ist keinmal
You'll Never Walk Alone
Not sure if this is what you are looking for, but this is taken from the Errata:
In Scenario 4, the 3-square long corridor tile in the north-west part of the map is actually on the reverse side of the 3x1 outdoor tile located next to the T-shape tile in the north-east part of the map. Replace the outdoor tile with other outdoor tiles.