Unregister

Last updated: August 1, 2026  |  Guide version: 1.0.8

Call the unregister method to deactivate the terminal currently in use. After unregistration completes successfully, you will not be able to start a new transaction until re-registered.

Re-registering. After a successful unregistration, new transactions cannot be started until the terminal is registered again with Register.

Call example

app2AppService.unRegister(eventListener);

Response

Success response

"response": {
  "a2aCode": "1017",
  "a2aMessage": "Unregistration has been completed successfully!"
}

Error response

"response": {
  "a2aCode": "1004",
  "a2aMessage": "Unregister error, please try again!",
  "errorCode": "104",
  "errorMainCode": "9",
  "errorSubCode": "32"
}

See also