Enter your Bundle ID of your application followed by "iCloud."
Now, open your App ID and configure iCloud Container
Once you confirm, your existing provisioning profiles associated to this App ID will be invalid, so you will have to regenerate them.
You can checkout How to Create Distribution Provisioning Profile to see how you can generate distribution provisioning profile.
is requesting access to a wiki that you have locked: http://my.axerosolutions.com/spaces/5/communifire-documentation/wiki/view/34109/how-to-create-icloud-container