Issue with RoV 2-16

I'm a long time player just returning and I'm running through these RoV missions.. I'm currently stuck on RoV 2-16. The missions calls for me to zone into Southern Sandy (S) for a cutscene. I did this, no issues. Now, I was supposed to receive the Cipher of Lilisette alter ego II trust for completing this, and the quest attempted to give it to me, however my inventory was full. Now I'm stuck on this mission, unable to continue. I wasn't paying attention, but I vaguely remember the mission stating I could go pick up the cipher somewhere. All I know is that its not in the completed quests menu. Any ideas where I can pick up a trust that was lost due to full inventory? I can't just talk to the NPC again because it was a zone-in cutscene. Any help would be greatly appreciated, I'm stuck on this mission until I can get this resolved.

Cipher: Lilisette II can be obtained inside walk of echoes. Look for the dead end heading downstairs on the opposite side of the path that leads upstairs to the bcnm arena for cait sith/atomos fights and find a glowing space that is targetable and has no name to it. This is a failsafe should you have full inventory when obtaining a reward and works just exactly like a resume point.

EDIT: They (Square-Enix) may have given this blank target a name now. I have not been to that area since chapter 2 was out.