Three-letter ISO currency code, in lowercase. Must be a supported currency. Specifies the invoice_credit_balance that this transaction will apply to. If the customer's currency is not set, it will be updated to this value.
OptionaldescriptionAn arbitrary string attached to the object. Often useful for displaying to users.
OptionalexpandSpecifies which fields in the response should be expanded.
OptionalmetadataSet of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. Individual keys can be unset by posting an empty value to them. All keys can be unset by posting an empty value to metadata.
The integer amount in cents (or local equivalent) to apply to the customer's credit balance.