Cloning report issue

I'm trying to embed a cloned report using a template report(the template was created with "N" dimensions dataset) by using a "N-1" dimensions dataset. As expected I'm notified that one or more dimensions are missing, however, I get a valid embedding token, valid embed url and valid report id(thin might be because the report per-se it's valid but not behaving properly when used on a dataset with lesser dimensions than the template) and no exception is thrown. Even more, in the response, the exception field has null value. Is there a way to tell which dimension(s) are missing?

Thanks,

Paul