Just read this from Microsoft documentation:

Project Deployment

At the center of the project deployment model is the project deployment file (.ispac extension). The project deployment file is a self-contained unit of...

I have implemented the code suggested and I am running into some trouble where every 3rd or 4th time I run the package, I get the same hash for columns...

Why the reference to sys.columns?

I think this solution works well...I'm just trying to figure out the purpose of the sys.columns reference?

Thanks,

Radro