The Complete Message:
Structural systems with limited ductility level cannot be used in buildings classified as earthquake design class (DTS) 1a, 2a, 3a, 4a.
In the article 4.3.4.1 (a) of TBDY 2018, it is stipulated that structural systems with limited ductility level cannot be used in buildings classified as DTS = 1a, DTS = 2a, DTS = 3a and DTS = 4a .
This building cannot be solved with limited ductility level.
Solution:
Make a high ductility level selection by using the Analysis Settings / Earthquake Code wizard.