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Company --> Company Info
Click EDIT
Click on the ‘Security’ tab
Go to the field labeled “Enforce IP address filters” and click the Edit icon
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Content Security Policy
If the intacct site Enforces content Security then we need to add the URL for the IntacctServ URL to allow JavaScript to load.
Go to Company > Company > Security > scroll to Content Security Policy and if the Enforce content security policy checked then make sure you add the URLs for DATABASICS intacct service and enable Java Script for both production and test.
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References:
https://developer.intacct.com/web-services/
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