I assume you are visiting the career agents for your corp. You will need to be docked at the State War Academy station in Uitra VI Moon 4, with a Tracking Computer I in your hangar (or cargo hold) speaking to Hakkaras Ihora
If you purchased a different kind of tracking computer - say a Tracking Computer II or an Optical Compact Tracking Computer - it won’t work.
If you’re sure everything is as it should be, submit a support ticket and the GM will reset the mission. I’ve run several characters through the Career Agents in Uitra - all the missions work.
Hah, looks like your tracking computer is not repackaged.
When modules are used and unfitted from ships or damaged loot, they must be repackaged to be tradeable or to be sent in to complete missions. You cannot sell this item either as long as there does not appear the little number of items in the bottom left of the icon, which shows the tradeable amount.
Repackaging is quite easy: right click on icon -> choose “repackage”. If they are damaged, they have to be repaired before. The item has to be in the station hangar, not in a ship cargo hold.