Unable to Verify or Authenticate Domain in Customer Insights

What's happening?

Users are unable to verify or authenticate custom domains within Customer Insights. Issues reported include:

• Domain registration remains pending indefinitely.
• The "Verify" button does not appear.
• Error message displayed: "an error occurred during creation of domain".
• Error log indicates: "Resource not found for the segment 'msdynmkt_ValidateDomainCustomAction'".

Reason:

The process "ValidateDomainCustomAction" was not activated in the system customization settings.

Resolution:

To resolve this, follow these steps:

1. Navigate to Advanced Settings.
2. Select Customization.
3. Click on Customize the system.
4. Go to Process.
5. Locate and activate the ValidateDomainCustomAction process.
6. Save and publish the changes.

After completing these steps, remove and re-authenticate the domain. The domain should authenticate successfully. For additional information on authenticating a domain, see Domain authentication in Customer Insights - Journeys | Microsoft Learn.