what is difference between xbp9b-xcst-001 revN and revP

We use this product on some of our products and have both flavors in stock. I could not find any release notes for these revisions.

Any help would be appreciated to reduce regression testing.

There should not be any functional differences between the two modules.

Internal release notes show that the shield was changed. RevP is soldered more securely and less prone to rust.