Error trying to add feature class to feature dataset

[quillaja]

I'm trying to create a feature dataset so I can do network analysis stuff. I have a feature class of lines for my routes. I added T_ZLEV and F_ZLEV to routes, all set to 1. This CRS is USA Contiguous Albers Equal Area Conic USGS (WKID/SRID is Esri:102039).

I also have a point feature class representing destinations on my network. These were originally entered as WGS84 coordinates, but I created a new version in the above CRS using the Project tool.

When I try to copy the destinations point feature class to the feature dataset, I get the following error. The message is clear, but why is this happened? The CRSs match.

Thanks!

[quillaja · Accepted solution]

I got it to work by creating a new file geodatabase, creating a new feature dataset with the CRS, then importing my routes and destinations. It would still be nice to know why it didn't work, but many things are unknowable.