metadata parameter on supported Fintoc objects. These objects currently include Charges, Checkout Sessions, Payment Links, Payment Intents, Transfers, and Account Numbers.
Use metadata to store additional structured data about the Fintoc objects you create. This data can help you associate Fintoc objects with records in your system. For example, you can store your user’s full name and corresponding identifier from your system on a Fintoc Payment Intent. Fintoc does not use or modify metadata.
Limitations
Metadata supports up to 50 keys. Key names can contain up to 40 characters, and values can contain up to 500 characters. Metadata values support onlystring, boolean, and number types.