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Reason Codes

This section describes the server-side HTTP status codes and reason values that are returned when you send requests to
Unified Checkout
. For information about client-side SDK error codes, see Handle Errors.

HTTP Status Codes

Code
Description
200
Request processed successfully
201
Session created
400
Bad request. The response body contains a reason value with details
404
Resource not found
500
Unexpected server error

Reason Values (HTTP
400
)

When the API returns a status code value of
400
, the response body includes the
reason
field. This section lists all possible values for the
reason
field:
Initialization Reason Values
Reason
Description
CAPTURE_CONTEXT_EXPIRED
The session JWT is expired. Generate a new session.
CAPTURE_CONTEXT_INVALID
The session JWT is not valid. For example, it has a bad signature or is malformed.
INVALID_APIKEY
The API key is not valid.
Checkout Reason Values
Reason
Description
CHECKOUT_ERROR
A general checkout error occurred.
UNIFIED_PAYMENTS_ALREADY_SHOWN
The checkout is already displayed.
UNIFIED_PAYMENTS_PAYMENT_PARAMETERS
One or more payment parameters have a validation error.
UNIFIED_PAYMENTS_VALIDATION_FIELDS
One or more fields have a validation error.
UNIFIED_PAYMENTS_VALIDATION_PARAMS
One or more checkout parameters have a validation error.
Mount Reason Values
Reason
Description
SHOW_LOAD_CONTAINER_SELECTOR
The CSS selector does not match any element.
SHOW_LOAD_ERROR
A problem occurred loading the payment iframe.
SHOW_LOAD_INVALID_CONTAINER
The container parameter is not valid.
SHOW_LOAD_SIDEBAR_OPTIONS
The container parameter is not valid for sidebar mode.
SHOW_PAYMENT_TIMEOUT
A payment method timed out during initialization.
SHOW_PAYMENT_UNAVAILABLE
No payment types could be presented to the customer.
SHOW_TOKEN_TIMEOUT
Token creation timed out during mount.
SHOW_TOKEN_XHR_ERROR
A network error occurred during token creation.
Complete Reason Values
Reason
Description
COMPLETE_AUTHENTICATION_CANCELED
The customer cancelled
3-D Secure
authentication.
COMPLETE_AUTHENTICATION_FAILED
3-D Secure
authentication failed.
COMPLETE_ERROR
A general error occurred during completion.
COMPLETE_IN_PROGRESS
A complete call is already in progress.
COMPLETE_NOT_ALLOWED
Complete is not allowed, such as when auto-processing is enabled.
COMPLETE_TRANSACTION_CANCELLED
The customer cancelled the transaction.
COMPLETE_TRANSACTION_FAILED
The transaction failed during processing.
COMPLETE_VALIDATION_ERROR
Parameters supplied to complete have a validation error.
Tokenization Reason Values
Reason
Description
CREATE_TOKEN_TIMEOUT
Token creation request timed out.
CREATE_TOKEN_XHR_ERROR
A network error occurred during token creation.
SDK_XHR_ERROR
A general SDK network error occurred.
TOKENIZATION_ERROR
Tokenization of payment data failed.
Payment-Specific Reason Values
Reason
Description
CLICK_TO_PAY_SDK_LOAD_ERROR
The
Click to Pay
SDK failed to load.
ENCRYPT_CARD_FOR_SRC_ENROLMENT_ERROR
Card encryption for
Click to Pay
enrollment failed.
GOOGLEPAY_CHECKOUT_ERROR
A Google Pay checkout error occurred.
LAUNCH_SRC_CHECKOUT_ERROR
Launching the
Click to Pay
checkout failed.
TRIGGER_PAYMENT_TYPE_NOT_SUPPORTED
The payment type is not supported for triggers.