I;'m not aware of anything, and have never seen this message before, TBH. Can you try what happens if you update to latest? Even if you dont want to switch your production over yet (you should), that might give us an indication on what the issue is.
it could simply be that Xcode 12.3 no longer supports frameworks but against a certain older version of the SDKs, and 9.x is a few years old, after all…
Updated to the DataAbstract Version 10 and that now compiles with no problem.
I am thinking that it must have been the XCFramework requirement that I found while researching what may be incorrect. Apple started enforcing the XCFramework requirement in Xcode 12.3. So instead of a warning it is now an error.
Otherwise, I am not sure what was causing the problem with Version 9.
This may be my situation also? I need to submit a new app to the iOS app store for an existing now “deleted” app for a former employer, and it’s built against DA 9, do I need to get DA 10 to build and link in XCode 12?
Probably, yes. In general, I recommend always using the latest RO/DA — especially for networked code its important to stay up to date with latest, for security. DA9 is getting old