The elcor have requested an emergency extraction for warriors and civilians trapped on their homeworld of Dekuuna. Search for survivors on Dekuuna, rescue them if possible, and return to the elcor ambassador.
Go to the Citadel Embassies floor on the Citadel and speak to the elcor diplomat using a terminal on your right after exiting the elevator, close to the stairs.
The elcor have requested an emergency extraction for warriors and civilians trapped on their homeworld of Dekuuna. Search for survivors, rescue them if possible, then return to the elcor ambassador. Dekuuna is located in the Phontes System in the Silean Nebula.
There is no action involved in this mission. Merely searching between Dekuuna and its moon Oltan will reveal the Elcor Flotilla at the moon and the Code of the Ancients on Dekuuna, itself. Despite this mission's name and journal description, scanning and retrieving the flotilla from Oltan is all that's required to complete it, Dekuuna itself can technically be ignored.
Note: It isn't necessary to speak with the diplomat first. Just go to Phontes, scan Oltan to acquire the flotilla, then go to the Citadel. After the first conversation with the diplomat that introduces the mission, just save and reload (or visit another level of the Citadel and return) and it should be possible to speak with him again to complete the mission.
Note: In Legendary Edition, you must speak with the diplomat before scanning.
Completing the mission gives you 5 Reputation and 120 experience.