At the boarding gate, another tracing can be done, paying attention to the number of volumes that are being carried, the existence of tags, the dimensions and, if necessary, the weight and the name written on the tag.
An Airline may refuse a certain baggage that is carried by the passenger at the boarding gate, it shall be considered as checked baggage and all the procedures for this type of baggage shall be guaranteed: tagging and introduction of the number of pieces and weight during the check-in.