Ad hoc invoicing allows you to generate an invoice at any time. You can now create one-off invoices with your Product Catalog items and enjoy streamlined classifications across platforms.
What we've added:
- Pick items from the Advanced Billing product catalog
 - Use price points from the catalog to suggest proper pricing
 - Enhanced tax functionality (settings are inherited from the item's tax settings in the catalog)
 - Coupons
 
For more information on the ad-hoc invoicing creator, check out the documentation here.