Abstract: A method may include receiving, from a scanning device, a first scan of a first identifier of a first slot within a package unit or a first item to be disposed within the package unit. A correct item to be disposed within the first slot having the first identifier or a correct slot for receiving the first item having the first identifier may be determined based on the first identifier and a packing order associated with the package unit. A user interface may be generated to display an indication of the correct item to be disposed within the first slot having the first identifier or the correct slot for receiving the first item having the first identifier. Whether the correct item is disposed within the first slot or the first item is dispose within the correct slot may be determined based on a third scan of a third identifier.