We're at eBaymag.com have users with Starter subscription level, but we can't acknowledge it via Trading API.

According to https://pages.ebay.com/seller-center/seller-updates/2018-spring/ebay-stores.html there are 5 different store subscription levels available now: Starter, Basic, Premium, Anchor, Enterprise.

But in API docs for GetStore call https://developer.ebay.com/devzone/xml/docs/reference/ebay/GetStore.html#Response.Store.SubscriptionLevel only 3 levels listed: Basic, Premium, Anchor, and fourth CustomCode reserved for future use.

Our users with Starter store subscription level are getting CustomCode level from GetStore API call.

I can't see any additional fields in GetStore response that would allow distinguishing between these two new store level subscriptions: Starter and Enterprise.

Is it possible to certainly say that some given user have Starter store subscription level with information from any API?