When you create an invoice, a preliminary invoice, also named an invoice proposal, is created at the same time.

Information about invoicing, such as the invoicing method and the transactions to be included, is defined in the invoice proposal.

Invoice proposals are created for the following:

• Invoices

• Credit notes

• On-account invoices

Create invoice proposals, on-account proposals, and credit notes proposals, and post invoices or credit notes in the Invoice proposal form.

To invoice a set of transactions on more than one invoice, you must create separate invoice proposals.

For example, you can specify hours on one invoice and items on another. In this situation, the invoice proposals must be created one at a time:

• An invoice proposal for transactions of the Hourtype.

• An invoice proposal for transactions of the Itemtype.