The Box Discovery Connector requires a working authentication connection. It will gather all metadata templates and their associated fields. However, there is one type of metadata, known as “Custom Metadata” that is applied to individual documents, but not part of a global template.
In order to find Custom Metadata, you will need to supply the id of a folder to crawl for documents. The id of a folder is visible in its URL.
Federation Services will attempt to extract the custom metadata elements of any folder or file it finds, adding it to the schema.
The values will have a type of “properties” for the purposes of mappings.