Why is the Create Invoice option greyed out? Why can't I create an invoice?

Hover your cursor over the Create Invoice button to see more information. There are a couple of reasons you are not able to create an invoice from your purchase order (PO):

• Your customer might not accept electronic invoices on the SAP Business Network. View your customer's invoicing rules to see if this is the case.
• Your customer might require you to create an order confirmation, ship notice, or service entry sheet before invoicing. View your customer's invoicing rules.
• A receipt may be required in order to create an invoice. Contact your customer to have them submit a receipt if needed.
• The trading relationship is suspended or rejected. Check the trading relationship status.
• The cXML line in the PO <Extrinsic name="Ariba.invoicingAllowed">No</Extrinsic> prevents invoice creation. View your PO's cXML information to see if this line is the cause.

The transaction rules which buyer need to make changes could be:

Allow suppliers to send invoices to this account.
Require suppliers to create an order confirmation for the PO before creating an invoice.
Require suppliers to create a ship notice for the PO before creating an invoice.
Require suppliers to create approved service entry sheet before creating an invoice.

Purchasing > Purchase Orders > Order Confirmation
SAP Business Network for Procurement & Supply Chain > Transaction Documents > Transaction (Invoicing)
SAP Business Network for Procurement & Supply Chain > Transaction Documents > Transaction (Purchase Orders, Ship Notices & Goods Receipts)