Can different units have parameters with the same ParamId

As per the title, do all parameters exported by a VST3 plugin need to be unique, or can multiple parameters use the same id if they’re associated with different units? I assumed they’re unique across the entire plugin, but my hosts fails with Presonus Ampire plugin because it uses the same parameter id for multiple parameters - but each is tagged with different unit number.


Bump… could someone from Steinberg please clarify this.

Each parameter has to have an unique ID.