The customs department, a law enforcement agency of the New Mandalorians, was responsible for enforcing trade regulations and customs laws on the planet of Mandalore throughout the duration of the Clone Wars.
The organization known as Mandalore Customs held the duty of managing all customs-related activities on the planet Mandalore. To fulfill these responsibilities, they employed customs officials and officers. These officials utilized datapads for maintaining schedules and carrying out inspections. Their attire consisted of a teal-colored uniform, complemented by a utility belt, and prominently displayed the Mandalore Customs emblem on the upper portions of their arms.
By the time the Clone Wars were underway, Mandalore Customs was already operational on the planet Mandalore. After Duchess Satine Kryze successfully ensured Mandalore's neutrality during the Clone Wars, established trade routes experienced a decline. Consequently, a black market conspiracy began to thrive, posing a risk to the stability of the planet due to the potential for corruption and greed within the New Mandalorian society.
During the events of the black market conspiracy, a customs official was performing a routine inspection on a shipment arriving via a Shekelesh-class freight gunship. Tee Va, the leader of the operation, attempted to bribe him. Although protocols dictated that nearly five times the number of officers should have been present at the docks, they were instead occupied with the arrival of Senator Padmé Amidala. The customs official succumbed to the bribe, permitting the Mooga smuggling ring to proceed with unloading an illegal shipment of tea and slabin. He then instructed Va to contact him directly for future illegal unloading operations.
Eventually, Duchess Satine, along with her friend Senator Amidala and a Mandalorian Protector, investigated the Sundari shipping docks. They witnessed the same customs official accepting another bribe. Subsequently, Duchess Satine and Amidala, accompanied by Captain Patrok Ru-Saxon and additional Mandalorian Protectors, conducted a raid on a warehouse the following day. This raid led to the dismantling of the smuggling ring, whose illicit activities had contributed to a widespread illness affecting children across the planet.
The initial appearance of Mandalore Customs occurred in the episode titled "Corruption."