Troubleshooting

This article lists the Frontend SDK error codes returned in the error.code parameter of the onPaymentIntentFailed and onOrderCompletedFailed event callbacks.

For event details, see Frontend Events.

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Error codes

Error Code	Description	When It Occurs	Troubleshoot
SESSION_ENDED	The checkout session has ended and is no longer valid.	When the session time to live (TTL) elapsed, the idle timeout expired, the player canceled the checkout, or the checkout token is missing, malformed, or unrecognized.	Open a new checkout session to continue, or check the integration that generates the session token.
SESSION_ALREADY_USED	The checkout session has already been opened and can’t be reused.	When the checkout is reopened or refreshed after the session was already used or closed.	Open a new checkout session to continue.
INTERNAL_ERROR	The request failed due to an unexpected server error. For onOrderCompletedFailed, this is the only error code returned.	When an unhandled application error is raised, or on onOrderCompletedFailed when there’s an issue with the Grant Award Callback, for example, an invalid link.	Retry the request, and contact Appcharge support if it persists. For Grant Award Callback failures, verify your callback URL.