1 Salesforce domain. 

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Find the Salesforce domain in use. 

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2 Trusted Origin folder.

In Okta administrator menu select Security/API and choose Trusted Origin folder.

Add the salesforce domain to the secure origins list. The result should look like the following.

The second NOT secure way ( can be used only for problem detection ).

In Okta administrator menu select Customizations/Other and scroll down the page.

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Choose Allow allow IFrame embedding. This way should not be used in production.

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