Steam Plugin causing "failed strict validation" error

Trying to build our games for Steam and I’m getting a build error ( please see screenshot ). This doesn’t happen for all of them though.

Any idea what this means?

Are you using a provisioning profile for this build? I get that problem on mac builds and the only way i know is to not sign the app during the build process and sign the .app from terminal later.

Are you using a provisioning profile for this build? I get that problem on mac builds and the only way i know is to not sign the app during the build process and sign the .app from terminal later.