...
As an example of API life cycle management, let's take a look at how to publish an API using the API Publisher.
Publishing an API
1. Log in to WSO2 API Publisher as a user who has been assigned the "publisher" role. For example,
...
Three options will be available for selection as follows:
Propagate Changes to API Gateway
Used to define an API proxy in the API Gateway runtime component allowing the API to be exposed to the consumers via the API Gateway. If this option is left unselect, the API metadata will not be changed and the API gateway will have to be configured manually according to the information published in the API Store.
Deprecate Old Versions
If selected, any prior versions of the API will be set to the "DEPRECIATED" state automatically.
Require Re-Subscription
Invalidates the current user subscriptions, forcing users to subscribe again.
...