Relevance of In App Purchase feature for enterprise license

My company has an enterprise license for distributing iOS apps within the company itself. However in the provisioning portal, in App IDs secti开发者_StackOverflow社区on I can see "In App Purchase" option enabled or disabled for the different app ids.

What I want to know is that is there any relevance of In app purchase for enterprise applications, because whatever I know about it is that, it connects to the app store for functioning.

Since we are not allowed to publish apps on the app store with a enterprise license, there doesn't seem to be any relevance of in-app purchase feature in this domain.