To make a batch request call, make a POST call to "https://us.identity.api.liveramp.com/v1/batch/lookup" and pass in a JSON array of URL strings constructed in the same way as a single transaction call to the Lookup endpoint. Start each string with "/entities/lookup?" and then include the encryption type (md5, sha1, or sha256), and key parameters for each request. For example: /entities/sha1/?key=key,...

You can pass up to 1,000 URL strings in a single batch call.

For guidelines on names, postal addresses, and supported combinations of data, see Lookup Endpoint.