What API attribute can add information like Order IDs to financial reporting?

The correct choice is that the API attribute used to add information like Order IDs to financial reporting is metadata. Metadata is a flexible feature provided by Stripe that allows developers to attach custom information to various objects within the API, including charges, customers, and subscriptions. By leveraging metadata, businesses can include relevant identifiers—such as Order IDs—directly tied to the financial transactions occurring within their Stripe account. This additional information enhances financial reporting and data analysis capabilities, allowing for better tracking and reconciliation of orders with corresponding payments.

In contrast, while terms like Message ID, Transaction Tags, and Reference IDs may relate to various aspects of transaction processing or notifications, they do not specifically serve the purpose of including extensive custom information tailored for reporting, as metadata does.