At the start of this quest, the text
Should you choose to undertake this quest, you will receive no guidance from the journal or the duty list. You will need to read the text carefully and decipher the clues to determine your next course of action.
is displayed, as it is in the quests preceding it. However, this particular one gives clear directions and highlights the area on the map where the task needs to be done. I assume the warning message is completely unnecessary...?