There are shearwalls. A11 cannot be selected
The Complete Message:
There are shearwalls in the X / Y direction. Bearing system type A11 in X / Y direction cannot be selected.
A11 structural system , seismic effects the whole transfer torque ductility high level was defined as buildings with reinforced concrete frames are met.
Only the column should be defined in the system.
If there is a shearwall in the project , A14 or A15 should be selected as the system type in the Analysis Settings / TBDY 2018 Earthquake Code Wizard, depending on the condition that the walls are with or without gaps .