Generally, Salesforce restricts the ability to iFrame their UI using the x-frame security directive to prevent their web assets from being rendered in a different domain. In order to display information from the Salesforce platform, you would need to develop your own web app that authenticates with Salesforce and interacts with the Salesforce API. One example within the Genesys Cloud platform is Data Actions, which can interact with the Salesforce API and provide the responses for display within a Script.
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Richard Schott
Genesys - Employees
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