Check the Computer (Configuration Item) OS Domain
For your Configuration Items, ensure the OS Domain is populated correctly by showing the FQDN. To check this, navigate to Configuration > Base Items > Computers. Click the cog wheel icon on the top left corner of the Computers list. Select "OS Domain" from the Available column list and click the right arrow so "OS Domain" is showing under the Selected column. Click "OK."
The OS Domain column will now be displayed in your Computers list. You can now verify that the OS Domain is the FQDN.
If the OS Domain is not showing as the FQDN, you will not be able to edit the domain field on the form. To do this you can use a script we have created to parse the domain from the LDAP source and populate the domain fields. You can access that here.
Check Shift Left Permissions
If you're still experiencing issues, make sure that Shift Left has the necessary permissions. Below is a list of the system tables that Shift Left needs permissions to: