The Perseverance rover has run into a snag, after a Martian rock sample extracted on December 29 didn’t transfer correctly into the rover’s long-term storage.

The Perseverance team pinged the rover for more data and imagery and told the rover to separate the drill bit and sample from the carousel.

Jandura noted that Perseverance is capable of doing the sample storage even with debris in the way, but as the $2.7-billion-dollar rover is still relatively new on the Red Planet and has plenty more science in store, the team hopes to clear the pebbles before continuing on with the mission.

The sample came from a rock outcrop named Issole, where the team hopes to collect a pair of samples from the crater floor in a region called Séítah, recognizable for its large, difficult-to-navigate sand dunes.