Deploying a previously Published API version
When a previously Published API version is selected to be deployed in the API deployment pop-up, there are two options for deployment: Deploy and Rollback.
Deploying a Published version of an API
Deploying a Published version of an API is otherwise identical deploying the Development version, except deploying a previously Published version of an API does not create a new version of the API.
Deploying a Published version of an API
deploys the OpenAPI Specification of the selected API version to the target environment
deploys the linked processes of the selected API version to the target environment
If a Published version is no longer valid, for example due to a used process being deleted, then it can no longer be Deployed.
Rollback a Published version of an API
Rollback can be used to rollback the Development version to an previous version of the OpenAPI Specification and previous versions of the linked processes.
Rollback for an API can be done only in the Development environment.
If you want to revert to an earlier version of an API in the other environments, you just deploy the earlier Published version to the target environment.
The next article is Introduction to updating API operations