Yield Curve Type Assignment in NPV run (TPM60)

Hi All,

Is the YCT type used in calculation bases of NPV based on the evaluation type I have used in TPM60 parameter? As seen in the file I have attached here, my evaluation type only contains YCT 9000 but there's one month-end wherein YCT 9050 was used & then in succeeding month-end it's gone.

Appreciate receiving explanation as to when the YCT gets assigned/used in NPV computation.

Thanks!

Chaikaru