We have a Databricks workspace with several repositories. We'd like to have a place with shared configuration variables that can be accessed by notebooks in any repository.

I created a folder named Shared under the root workspace and in that folder, created a notebook named shared_configuration containing the common configuration values.

 I am not able to call this notebook from notebooks within a repository. I've tried many variations of the path to the notebook but it always results in the error 

Notebook not found: '{notebook path}'. Notebooks can be specified via a relative path (./Notebook or ../folder/Notebook) or via an absolute path (/Abs/Path/to/Notebook). Make sure you are specifying the path correctly. 

Is it possible to invoke a workspace notebook from inside a repository, and if so what is the correct syntax to do so?

Alternatively, is there some other recommended way to store common variables in a Databricks workspace that are accessible to notebooks in repositories?