In the attached sample project; 1) Although I define P18/P19 curtains as short head curtains and PG1(P19-P05), PG2(P18-P06), I get the error "The ratio of the long side of the curtains to the thickness of the plan must be at least 6" in the geometry control. Is there anything I'm doing wrong at this point? Or should I ignore the bug in the geometry check at this point? 2) Although there are curtains in the X and Y directions, when the analysis was made, "the carrier system type a15 (y direction) was selected in the report section. I get the error "curtain must be used in A15 carrier systems". Is the reason for the error at this point that the basement curtains do not continue on the upper floors? (On the upper floors, only the elevator perimeter curtains continue in the x direction) 3) For the basement floor curtains, in the curtain settings section, "flooded / non-continuous curtain" in the Static / Reinforced Concrete section and in the reinforcement design options in the reinforcement section "basement floor perimeter Should I tick the 'curtain' options?