We use conventional HTTP response codes to indicate the success or failure of an API request.
Codes in the 2xx range indicate success.
Codes in the 4xx range indicate an error.
Codes in the 5xx range indicate an server error.
Some 4xx errors that could be handled programmatically include an error code that briefly explains the error reported.
LOYALTY_ACCOUNT_ERROR
ANOTHER_ONGOING_LINK_ACCOUNT
ELIGIBLE_CHANGE_FOR_ONGOING_LINK_ACCOUNT
LOYALTY_ACCOUNT_UNLINKED_COMMITTED
LOYALTY_ACCOUNT_UNICITY_ERROR
LOYALTY_ACCOUNT_EVENT_ERROR
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