This article presents possible use cases and corresponding sample flows that you can support. It provides a useful starting point as you plan your implementation.
If a business wants to set up a custom invoice numbering system with a specific prefix, suffix, and starting number, you can configure the site's invoice settings.
To configure invoice numbering for a business:
Call Get Invoices Settings to retrieve the current settings and the latest revision.
Call Update Invoices Settings with the desired numbering configuration. Pass the current revision and specify the fields to update in fieldMask.paths. For example:
Last updated: 10 June 2026