Other mistake: In the scene where Jason drops from the bridge to the boat, you see him grab his left leg/knee in pain. But throughout the rest of the film, you see him limping on his right leg.
Other mistake: When Bourne is looking up the address of Hotel Brecker on the website, the street is spelled Kurtürstendamm. It should read Kurfürstendamm with an F. The English translation of this famous street's name is "causeway of the electoral princes"
Other mistake: When Bourne's 4x4 is recovered from the river, there is no damage to the rear window. But Marie was shot in the back of the head while driving away, so there should be a bullet hole. (00:20:35)
Answer: Picot from The Bourne Identity is not in The Bourne Supremacy. The one Jason Bourne pays a visit is called Jardo (director Paul Greengrass mentions this on the commentary track) and lives in Munich (visible on screen), ie. South Germany.