Configuration to Email Multiple Agreement Documents in LightningYou must whitelist your domain for cross-origin resource sharing (CORS) in Salesforce Lightning to email multiple agreement documents in lightning.To configure CORSGo to Setup > Security > CORS.In the Whitelisted Origins section, click New.In the Origin URL Pattern field, add <yourdomainname>.lightning.force.com Sample value: https://testclm.lightning.force.com. Click Save.