1. To troubleshoot double reinforcement in the stair slab, enter the properties of the beam supported on the slab. Check "This beam bears cantilever slab". 2. The form of the slab that did not meet the deflection requirement was not defined correctly. Define as I show in the screenshot, but your project has carrier system selection problems that will force dimensions. 3. It is normal to have B1 irregularity in your project. There is a serious loss of space between the 3rd basement floor and the 2nd basement floor. Examine the B1 irregularity report. You will see the status. In terms of total curtain column areas, the lower floor is less than the upper floor. Therefore, B1 irregularity occurs. I think changes should be considered on the architectural project.