Hello there; I reviewed your project. First of all, let me give some information about linear performance analysis. Linear performance analysis is an SGDT approach given in TBDY Chapter 15 that enables the determination of building performance when suitable conditions are met. For this reason, while making the evaluation, Controlled Damage, Limited Damage, Pre-Fall or Failure situations are checked on an element basis. Since SGDT approaches are generally nonlinear, some conditions may be punishing because the linear performance analysis method is approximate. In addition, Linear Performance Analysis application limits (TBDY 15.5.3.1) must also be met. Regarding nonlinear analysis; If the second-order effects of the structure are assumed to be linear in the intermediate steps during the pushover analysis, no pivot error is given. This acceptance can be easily made in reinforced concrete buildings. In addition, even if this is linear, second-order effects are taken into account in the initial step. Nonlinear behavior as a material is always taken into account. In the picture below, I tried to mark how you would consider this situation. Also, there are some data entry errors in your project, I would like to mention them. First of all, when checking the geometry, you should take into account the warnings "Overlapping objects", "Incorrect column placement", "Vertical continuity error" "incorrect floor level". These errors are very important data entry errors that affect the analysis system. On the 4th floor, the columns S12, S13, S28 and S29 are placed on the beams, which will create the B3 irregularity. (Linear performance analysis should not be performed in buildings with B3 layout.) Another situation is that there are errors for the S17 column as if sheathing was done on the 3rd floor but not on the 2nd floor. You can get healthier results if you purify your project from these data entry errors. Best regards...