Generating API Login ID, Transaction Key, and Signature Key Using The Merchant Interface
To locate your API Login ID and generate the Transaction Key and Signature Key, log in to the Merchant Interface as an Administrator and navigate to Account > Settings > Security Settings > General Security Settings > API Credentials & Keys. The API Login ID is in the center of the page. At the bottom of the page where it says “Obtain” select the “New Transaction Key” option and then click Submit. Copy the key that it displays on the next page. Repeat this process for the Signature Key.
Generating The Public Client Key Using The Merchant Interface
To generate the Client Key, log in to the Merchant Interface as an Administrator and navigate to Account > Settings > Security Settings > General Security Settings > Manage Public Client Key. If the Public Client Key does not yet exist, answer your security question to generate the key.