Sales Orders With Billing Schedule do not Display the Next Bill Button

In this case, please review following:

1. Navigate to the Sales Order
Note: There is no Next Bill button available

2. On the Sales Order > History > Fulfillment & Invoices - click on the date link beside Invoice

3. Check Invoice > History > System Notes - notice the field Total reflects the total value of the Sales Order. It means that the Invoice has been created using the Bill Remaining button.

*Note: Users should always use Bill Next button in order to follow the Billing Schedule