Abstract
A method for fulfilling a group order using a bundled tote is disclosed. The order fulfillment method using the bundled tote includes generating, by a first processor, order information in which a first type of a first bundled tote and the group order link each other; transmitting, by the first processor, the order information to the robot; when the second bundled tote is already loaded on the robot, determining, by a second processor, whether a type of the second bundled tote corresponds to the type of the first bundled tote of the order information; and fulfilling, by the second processor, the group order without replacing the second bundled tote, if it corresponds.