Designer is not identifying fields when trying to find nearest neighbors.

[ReshmiKaruturi]

But it is identifying fields in the sample datasets provided. What should I do?

[Qiu]

@ReshmiKaruturi 
I dont have this tool.
Maybe because the required data type is not existing in your first dataset?

[ReshmiKaruturi]

I have already tried converting my dataset to the format of the dataset that is working. Still no luck.