Root Cause:
The Commerce Category was not configured in the website’s Search Index settings—specifically, it was missing from the Sort Fields and Facet Fields.
Resolution Steps:
- Go to Setup > SuiteCommerce Advanced > Search Index Configuration.
- Under the relevant website configuration:
- Add Commerce Category to the Sort Fields.
- Add Commerce Category to the Facet Fields.
- Rebuild the search index to apply changes.
Make sure the Commerce Categories feature is enabled. To do this, go to the Web Presence tab under Enable Features, and check the box for Commerce Categories.