When you copy a datamodel from the MondoDb collections automatically get a @required annotation. When you import this to your Android application it doesn’t compile and you get the error message @Required not allowed on RealmList that contain other Realm model classes.
I think it has been like this for a while. Is this a bug?
Would you mind sharing the explicit steps for copying the data model for the collections, so that I can try to reproduce?
It’s probably the same issue as this one: @Required not allowed on RealmList's that contain other Realm model classes on models saved from Realm Studio · Issue #1025 · realm/realm-studio · GitHub
Not sure if this has been fixed yet in MongoDb Realm. But all generated models that had lists of them generated a kotlin class with @required which fails to compile if you import this to Android studio. I did send a support issue about this including samples and they were able to reproduce the issue.