Hi anonymous user,
Thanks for reaching out.
I understand you are looking to view and update custom field's value from the portal.
You cannot view/edit custom attribute's value from Azure Portal.
Values to custom attributes can be assigned by users either during signup or you can use profile editing user flow to assign/update the value of custom attribute.
You can use the Graph API beta endpoint https://graph.microsoft.com/beta/users/object-id-of-the-user to view the custom attribute values assign to the user as
"extension_app-id-of-b2c-extension-app_customAttributeName": "value",
Admin can update the above field value with patch request:
PATCH https://graph.microsoft.com/beta/users/object-id-of-the-user
Body:
{"extension_app-id-of-b2c-extension-app-without-hyphen_custom-attrib-name":"assigned/update_value"}
Hope this will help.
Thanks,
Shweta
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