Add a message or attachment to the sales invoice

You can add an invoice-specific or customer-specific message to a sales invoice.

To add a message to a sales invoice, click the Add message button at the bottom of the sales invoice.
Two fields will open at the bottom of the invoice: Invoice-specific message and Customer-specific message.
- Invoice-specific message - In this field, you can add an invoice-specific message that will only be displayed on this invoice.
- A message is automatically copied from the customer card to the Customer-specific message field. By default, the message is displayed on all invoices sent to the customer, but you can edit or delete the message for each invoice.
Select Save to save the messages to the sales invoice.

You can add attachments to the sales invoice, such as timesheets or a breakdown of expenses.

Select Add attachment at the top of the invoice view.
Attachments must be in PDF/A format, and the total size of the attachments cannot exceed 5 MB. Please note that if the attachments are regular PDF files, they will be converted to PDF/A format, which may increase the file size.
Press the button again to open or delete attachments. Attachments cannot be deleted or edited after the invoice has been sent.

This article explains how to add a message or attachment to a sales invoice.