FDMS Nashville: Level II Transaction Requirements When you send a capture or credit request with Level II data, you must include the required fields for every capture or credit request. For information about the non-Level-II fields required for capture and credit requests, see the Credit Card Services User Guide. Interchange Rates This document provides guidelines that indicate which fields are needed in order to obtain the best interchange rates. These guidelines are based on industry information. CyberSource recommends that you contact your acquirer for the most current information because the payment card companies can change their requirements at any time. Data Types Fields for amounts and tax rates use a string data type. However, you should include only numbers and a decimal point in those fields.
