Check Transaction Events {#ttp-sis-pymnt-svcs-cloud-check-txn-events-intro}
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Use the information in this section to process a Check Transaction Events request when the app is in Cloud mode. This type of request is a follow-on service for receiving transaction responses asynchronously. For more information, see [Receiving Transaction Responses Asynchronously](/docs/cybs/en-us/tap-to-phone-sis/integration/all/rest/tap-to-phone-sis/ttp-sis-pymnt-svcs-cloud-mode-intro/ttp-sis-pymnt-svcs-cloud-txn-resp-async-api-intro.md "").  
Generate a bearer token before sending each request. For more information, see [Generating a Bearer Token for Authentication](/docs/cybs/en-us/tap-to-phone-sis/integration/all/rest/tap-to-phone-sis/ttp-sis-pymnt-svcs-cloud-mode-intro/ttp-sis-pymnt-svcs-cloud-mode-bearer-tkn-intro.md "").

Endpoints
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The GET request must include the interaction identifier (`interactionId`).  
**Test:** `GET https://terminalstest.cybersource.com/v1/cloud/interactions/{interactionId}/events`  
**Production:** `GET https://terminals.cybersource.com/v1/cloud/interactions/{interactionId}/events`