Why wasn't my rental billed

Why wasn't my rental billed. Check these in order:

The steps, written out

1. Agreement status must be Active or Off Hire; Draft and Closed are skipped.
2. Start date must be today or earlier.
3. A Delivery ticket must be Completed (with a completed date) and linked to this agreement. Scheduled, loaded or in-transit tickets do not start rent. Open the agreement's Tickets tab.
4. In arrears: nothing is billed until the cycle ends; see the Billing schedule tab for the "Billed on" date.
5. The invoice may exist as a Draft waiting for approval (check the Draft tab).
6. Add-ons (transport, labour) may be waiting for the next rental invoice (see Add-on charges in Billing settings).
7. On Billing runs look for a red Errors badge; a closed accounting period blocks invoice creation.