Having logged a support case with Microsoft I can confirm that this feature is not available outside of the GUI. Hopefully this saves others some time.
Enterprise App - Customize Group Claim Name via Graph API
Aaron Sixtus
101
Reputation points
Hi All,
I'm attempting to customize the name of a SAML-based Sign-on group claim (CustomName in the screenshot below) in an Enterprise App via the Graph API but am unable to find any object or attributes that allow this. I have the App Registration manifest and Enterprise App/App Registration Graph objects.
Is there a programmatic way to set this type of custom name? Any help would be greatly appreciated.