It's hard to know exactly what's going on without more details. Can you share more details? Ideally, can you share the project and the steps we need to follow to reproduce the error?
Without those details, it's hard to know how to help you. But here's what I can say.
As of R2024a, SimBiology no longer allows most components within a model to have the same name. There are a few exceptions (for example, two species can have the same name as long as they're in different compartments). You can read more about that in the SimBiology release notes.
If you open a project that has duplicate names (because it was created in an earlier version that supports them), I expect a warning dialog to appear telling you that these duplicate names have been fixed by renaming some of the components. If that's what you're talking about, you can likely just dismiss the dialog and look at the components that have been renamed.
If you are seeing this error when you are trying to give name a component, you just need to give the component a different name. If you really want the component to have this name, then you need to find out what other component in your model has this name and give it a different name.
