Why can’t I use other custom fields in the Group by dropdown field?

Question

I'm trying to use a custom field as a Group by when creating a widget. Why is it not showing up from the dropdown field?

Answer

Custom fields cannot be used as a Group by attribute when creating a widget in the Sell Performance Dashboard. You can only select from a standard set of fields we provide and not your custom fields in this report.

For more information, see this article: About reporting in Sell.