attribute

The attribute to target.

The following attributes may be targeted:

• MCC: A four-digit number listed in ISO 18245. An MCC is used to classify a business by the types of goods or services it provides.

• COUNTRY: Country of entity of card acceptor. Possible values are: (1) all ISO 3166-1 alpha-3 country codes, (2) QZZ for Kosovo, and (3) ANT for Netherlands Antilles.

• CURRENCY: 3-character alphabetic ISO 4217 code for the merchant currency of the transaction.

• MERCHANT_ID: Unique alphanumeric identifier for the payment card acceptor (merchant).

• DESCRIPTOR: Short description of card acceptor.

• TRANSACTION_AMOUNT: The base transaction amount (in cents) plus the acquirer fee field in the settlement/cardholder billing currency. This is the amount the issuer should authorize against unless the issuer is paying the acquirer fee on behalf of the cardholder.

• RISK_SCORE: Mastercard only: Assessment by the network of the authentication risk level, with a higher value indicating a higher amount of risk.

• MESSAGE_CATEGORY: The category of the authentication being processed.

Sets Builder.attribute to an arbitrary JSON value.

You should usually call Builder.attribute with a well-typed Attribute value instead. This method is primarily for setting the field to an undocumented or not yet supported value.