Security Code...

Security Code... is the twenty-fourth Trouble Center mission in Paper Mario: The Thousand-Year Door, initiated by the Businessman. It is first available after clearing Chapter 6.

Mission
Mario must travel to Glitzville, where he finds the Businessman in front of the Hot Dog Stand. When talked to, the Businessman tells Mario that he forgot the four-digit code to his briefcase, and the only way to remember it again is to count the number of chairs in Kroop's house first, Flurrie's house second, Don Pianta's office third, and Toodles's house fourth. After noting the number of chairs in each of those locations, Mario must travel back to Glitzville and relay the code to the Businessman, 2625, which unlocks the briefcase. With the trouble solved, the grateful Businessman rewards Mario with a Hot Sauce. Afterward, Mario can purchase more Hot Sauces from the Businessman.

In-game description

 * "I forgot the code to my briefcase! I'll be sacked for this for sure! Meet me in front of the Hot Dog Stand in Glitzville!"