Confusion is the Key  

This is the fourth in a series of quests from Captain Vertas at the Crossroads in the Commonlands. It is given after you complete the Proving Your Worth quest.

You must switch some real dervish orders with some fake ones that he will give you. Basically you just need to interact with a map on a table outside of a dervish shack at 1239, -40.7, 343 Copy in the Commonlands.

After doing this return to Vertas for an upgrade to your insignia. This also opens up the One Final Task quest.