This API is subject to change. Bug fixes and new features will be released based on developer feedback throughout the preview period.
Updates a billable item.
Each time the BillableItem is updated,
revision increments by 1.
The current revision must be passed when updating the billable item.
This ensures you're working with the latest billable item
and prevents unintended overwrites.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.