Placekey is a great way to find a common identifier for your assets that can be used with multiple datasources.
The Placekey toolbox can help you with:
data merging
address identification
joining information originating from different sources (like OSM, HERE, Google, etc)
The plugin can be downloaded here:
https://github.com/riccardoklinger/AG...
Find out more at the company blog:
https://www.placekey.io/case-studies/...