Why do I receive the error "[Buyer] requires you to fully confirm the line items before creating invoice." for an order which is already confirmed?

SAP Business Network.

1. Log into my SAP Business Network Supplier Account.
2. Go to the Orders tab > Purchase Orders.
3. Click the Order Number to open the Order you want to invoice.
4. The Create Invoice button is grayed out.

When hover the mouse over the Create Invoice button we see the message "[Buyer] requires you to fully confirm the line items before creating invoice." but an Order Confirmation was already created for this Purchase Order.

When the rule Require suppliers to fully confirm line items before fulfillment is enabled, the application checks if the item is Confirmed As Is, Confirmed With New Date or Confirmed With Comments.

If the item is 'Confirmed With Changes', the system does not acknowledge this Item as fully confirmed and prevent the Invoice from being created.

The system can acknowledge an Item as 'Confirmed With Changes' when the supplier enters a text in Pricing Description field in the Details section.

Supplier must submit a new Order Confirmation leaving the Pricing Description field in blank, so the item get as 'Confirmed with New Date' and considered as fully confirmed by the system.

Or ask the buyer to disable the Transaction Rule 'Require suppliers to fully confirm line items before fulfillment'.

If you ask the buyer to disable the Transaction Rule, you may share this article for more details: How do I enable or disable rules in SAP Business Network Buyer Account?

Purchasing > Purchase Orders > Order Confirmation
SAP Business Network for Procurement & Supply Chain > Transaction Documents > Transaction (Invoicing)