You can split long reinforcing bars and bar groups that exceed the stock length, and create splices in split locations.
Use the Automatic splicing tool macro to split and splice reinforcement that exceeds the stock length. You can first check the length of the reinforcing bars in the model according to the manufacturer. You can then define the portion of the reinforcement to be split and spliced in the same cross section, and the location, symmetry, type, and length of the splices.