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Limitations

Target audience: consumers of the integration layer.

These are constraints that the application layer must be aware of.

Process and Configuration​

  • The integration layer must be started once per app process.
  • Terminal configuration cannot be changed after ApiModule.start(scope).
  • ApiModule.start(scope) is asynchronous; use terminalReady.

Startup and configuration are described in Quick Start and Configuration.

Operations​

  • Only one payment at a time is supported.
  • Void requires appSpecificData from the original payment.
  • Refund card verification compares only the BIN and the last four digits when used.
  • Starting the scanner requires an Android Activity.

See the respective feature pages for details.

Printing​

  • PrintContentType.IMAGE is not verified as true image printing on the terminal printer.
  • Epson printing uses a separate Epson integration, not the terminal printer.

See Receipt Printing.