Shear Connection Tying Capacity Eurocode 3

Hello,

I'm designing a BCW Shear Connection (Fin plate) and I noticed that the tying capacity is not considered in the design. I tried putting 0 shear load and 1000kN of axial load, and the unity ratio became 0. Where is the axial taken into account in the calculation. Can someone enlighten me. Maybe I missed something.