Recent Revisions to This Document Release Changes August 2019 Added information about multibyte character strings. See Working with Mutltibyte Character Strings. March 2019 Added the following request fields. See Initiating a Payment, and Working with Mutltibyte Character Strings. ■ submerchant_id ■ submerchant_name Added the following offer-level request fields. See Initiating a Payment, and Offer-Level Fields. ■ amount ■ merchant_product_sku ■ quantity Updated initiate payment request examples. See Initiate Payment Examples. January 2018 Updated the “Supported Currencies and Amounts” section. See Supported Currencies and Amounts. March 2017 Removed the “Merchant Notifications” section. Removed the link to the New Business Center User Guide. May 2015 Updated the link to the New Business Center User Guide. See Supported Payment Types. October 2015 Added the “Merchant Notifications” section. See Supported Payment Types.