Different Prep Baseline values are obtained through command line processing and SNAP software

The Prep Baseline values calculated from the SNAP software and the command line are not matching. The dataset used is the same.

are the orbits used identical too?

I dn’t know how snap command line process the data.

I may be wrong but based on your screenshots, I have the feeling that SNAP computed the perp baseline with the precise orbits with GPT (see the _orb suffix) but without precise orbits in your stack overview (directly on your zipped data).