I am trying to create streams and outlets in APEX Subarea Delineation (version 10.3.1). I checked the DEM projection set-up and projection of all files (DEM, channels, delineation): Geographic coordinate system: GCS_North_America_1983 and unit: meter. I followed the steps (step 1-4) of subarea delineation in ArcAPEX manual. In steam definition, I chose pre-defined steams and watershed and I insert delineation .shp in watershed dataset and channels .shp in steam dataset. Then tried to create steams and outlets in steam network option. I got an error message – this is indicated in the attachment, please find.
Can you please help me to find out the error and creating steams network? Thanks in advance for your kind help.