Is there a way to skip creating invoice for certain order?

Technically that’s possible with the wpo_wcpdf_document_is_enabled filter. But to be able to give an example we need a bit more information. How are these orders identified?

I would like to choose manually for each order that won’t require an invoice the be created. There is no way of automatically indentify the order.

I would be more than happy if it worked like:

– Open the order
– Set a checkbox or whatever, to prevent the invoice to be created
– Save order, return to the order list and click Completed when done

Adding additional interface elements is not trivial and beyond the support we can give for the free version. But if you always manually approve all orders, you could also apply the rule that an invoice should have been manually created before it will be attached to the email. So instead of setting a checkbox to prevent the invoice from being created, you click the invoice button to create it for the ones that do.
Then if you put this filter in place:

add_filter( 'wpo_wcpdf_custom_attachment_condition', 'wpo_wcpdf_only_email_existing', 10, 4 );
function wpo_wcpdf_only_email_existing( $attach, $order, $email_id, $document_type ) {
	$document = wcpdf_get_document( $document_type, $order );
	if ( empty($document) || $document->exists() === false ) {
		$attach = false;
	}
	return $attach;
}

The plugin will only email the PDF for orders that had already have an invoice (created by the admin).

If you haven’t worked with code snippets (actions/filters) or functions.php before, read this guide: How to use filters

Hope that helps!

Thank you! That works perfectly for now.

Take it as a request for the paid version. Some way to manually disable invoice creation when using the standard function to mark the order Completed. There is a section on the order to set invoice number and time, perhaps itegrate this setting there.

Anyhow, thank you very much for your help! ??