Changes allowed to unreleased and released invoices
After you create an invoice, you maintain (optional), release, and then print the invoice (issue to the customer). Your options for processing the invoice after creation remain the same, regardless of the source that created the invoice.
About maintaining an unreleased invoice
You can maintain an unreleased invoice in the Billing application to update invoices, billing adjustments, and credit memos. You can also maintain a shipment-related invoice to change information such as price, comments, or freight charges.
If you invoice at more than one process level, then you can change the process level of an unreleased invoice to create a new invoice for a different process level.
About maintaining a released invoice
The Billing application limits what you can maintain on invoices that are released. You can add or remove hold codes on a released invoice, delete shipment-related invoices, and delete invoices created manually. You can also add comments to a released invoice.
Invoices that originate from the Order Entry application or outside sources often enter the Billing application as released invoices.