Hi @Susan Genoray, After installing Screening Deployed, you will first need to enable the web-services to allow API access via the URL. It is then possible to configure the API security. The default configuration allows API to be used without any form of authentication (i.e. default authentication is turned off allowing anonymous connection). To switch on the security settings you need to follow few steps detailed in our API detailed user guide named as TRSD_SCREENINGAPI_QRG571.pdf. You must have received this document from one of our representative when starting this project. If not, please let me know and I can forward you the same.