Aircraft is Embraer 190. Service door 1 is properly configured. Upon calling the Catering truck, I get two trucks, one after the other. Truck 1 pulls into position at Service door 1 and then truck 2 pulls into the EXACT same position. You only see one truck but you see two delievry carts and two men pushing these carts into the aircraft. I have Service Door 2 configured for a belt conveyor which works properly with one conveyor. I have restarted Couatl but the problem still exists. All other service vehicles (bus, stairs, fuel truck, conveyor belt, tug and baggage carts) present with just one vehicle each. I hate to waste food!