This mission puzzle takes place in Jundland Wastes over in Tatooine. You can acquire it during the New Beginnings main story mission
It involves jumping over a small gap amongst the cliffs
Head to Jundland Wastes over in Tatooine and you should be able to spot the cliffs here, one of which has a gap that looks like we can jump over.
Head to this gap and throw one of your companions over the gap to complete this one.