The other party doesn't have a Patisco account (e.g., a customer from a public page or a manually created buyer). How do we confirm the document?

When the other party doesn't have a system account, the 'Send' button won't appear on the details page because there's no one to receive it. Instead, 'Confirm' is displayed when the document is 'Editing'. Click it to mark your copy as confirmed—this purely records progress, and the list will show 'Confirmed'. You can also select multiple documents in the list and batch 'Confirm': documents without the other party will be directly marked as confirmed; documents with the other party will trigger confirmation sync, which requires the other party to have a new version with matching content to send. Non-conforming documents will be skipped with an explanation of the reason (e.g., 'The other party has no pending new version' or 'Content does not match the other party's version; please handle it on the details page'). To convert this type of customer into a synced trading partner, use the 'Invite as Buyer' prompt at the top of the document.