Identity Resolution APIs

The Identity Resolution (IDR) API includes two ways to match your request criteria to entities in the Dun & Bradstreet database.

API	Description	Geographic Coverage
Identity Resolution	Returns multiple results based on the request parameters.	Global
Match and Append	Returns the best match plus the requested data product response.	Global
Match and High Risk Insights	Returns both the match and fraud results based on the request parameters.	US

For more information on the Identity Resolution feature please see the Identity Resolution guide.

If you have a large number of entities to submit (more than 4000), D&B Direct+ also provides a Multi-Process API for this purpose. For additional information, please see:

• Which Identity Resolution method do I use?
• Multi-Process guide
• Multi-Process API

Before using any API, you must have an access token; see the Authentication page for more information.

The following resources are available:

• Error and Information Messages is a list of all error messages with explanation and suggested actions.
• JSON sample containing all possible response elements.
• Postman collection allowing you to run the APIs from Postman.