show_screen_request contains the following data elements:
|if not specified the PED object will be automatically populated.
|The merchant account processing this transaction. Transactions can be performed with any of the merchant accounts that were returned when registering the POS.
terminal_id of the PED.
|The XSLT file used by the screen as template.
|Base64 encoded XML data sent to the screen. Includes data elements as well as styling options. The relevant options depend on the template to show the screen and expose content control options.