anchor.diff:  image::invoices.png[width=850,align="center"]
   +
   [NOTE]
  -*Note: Kill Bill immediately generated the invoice for the first month of the subscription because the plan (on which the subscription in based) has no trial period and because billing is performed _in advance_ by default.
  +*Note: Kill Bill immediately generated the invoice for the first month of the subscription because the plan (on which the subscription is based) has no trial period and because billing is performed _in advance_ by default.
   +
   . Click on the invoice number to see the invoice details: 
   +
  
positive.code: +
  Kaui opens the Add New Payment Method screen.
  +
  . Verify that `__EXTERNAL_PAYMENT__` appears in the *Plugin name* field and check the *Default payment method* checkbox.  
  +
  image::add-new-payment-method-cropped.png[width=450,align="center"]
  +
  . Click the *Save* button.
  + 
  Kaui displays the new payment method as `__EXTERNAL_PAYMENT__` in the *Payment Method* section. The filled star to its left indicates it is the _default_ payment method: 
  +
  image::payment-method-with-default-selected.png[width=350,align="center"] 
  
  
negative.code: . <<step6, View the generated invoice>>
  
  [NOTE]
  *Note:* You can also achieve these same results of this tutorial with the API. In fact, if you are going to have a front-end interface (such as a website), the API calls are what you use to communicate with Kill Bill (as opposed to using Kaui). For more information, see https://docs.killbill.io/latest/getting\_started.html#_api_client[API Client] in the https://docs.killbill.io/latest/getting_started.html.html[_Getting Started_] guide.
  
  _getting started_
  
  == Before You Begin
  
  