ansys fatigue calculation

dear all,

I performed fatigue analysis for 2205 duplex stainless steel pipe but I noticed from the result allowable cycles that supposed to be calculated by ansys is constant(1e8) in the different locations. and the alternating stress value is too small. so what the source of error that I made?. to explain further I presumed that pipe exposed to two events each one of them include two loads.

any advice is highly appreciated

thanks in advance