I tried to use Arcgis 10.6.08321 to generate stream link in a large basin. It provides strange results. A lot of zero on stream cells. While I tried with Arcgis 10.5.1, it is working well.
For watershed function, Result from ArcGIS 10.6.08321 has watershed is from 1 to 255. While the pourpoints Id range from 1 to 409. I use Arcgis 10.5.1, the problem disappeared, each watershed has a unique id.
How to solve this problem?