For the response, we can have the following structure in case of an error:

Status Codes

This will be a high-level status code from the following:

Code	Title	Description
200	Ok	The request was successful.
400	Bad Request	Bad request.
401	Unauthorized	Your API key is invalid.
404	Not Found	The resource does not exist.
500	Internal Server Error	An error occurred with our API.
503	Service Unavailable	Service Unavailable.

Error Codes

This will be the error codes of the following type:

Status Code	Error Code	Message
200	UNABLE_TO_UPLOAD_PHOTO	Unable to upload the photo. Please try again later.
400	ATTRIBUTE_NOT_UNIQUE	IdParams name passed is not a unique attribute.
200	MEMBER_ID_ALREADY_IN_USE	Member ID already in use.
200	INVALID_MEMBER_STATUS	Invalid member status.
200	MEMBER_BLOCKED	Member has been blocked.
200	MAX_AWARDS_EXCEEDED	Maximum award limit exceeded.
200	INVALID_AMOUNT_TO_DEDUCT	Not enough points to deduct.
400	INVALID_JSON	Invalid JSON format.
400	INVALID_REQUEST	Invalid request: unsupported Content-Type [content-type].
200	INCORRECT_MEMBER_ID_PASSED	Incorrect Member ID passed.
200	STORE_INACTIVE	Store is not active.
200	MEMBER_DELETED	Member record has been deleted.
200	EXCLUDED_TRANSACTION	Points could not be awarded because exclusion rule was applied.
404	TRANSACTION_DOES_NOT_EXIST	Transaction does not exist.
500	INTERNAL_SERVER_ERROR	Internal server error.
400	INVALID_REQUEST_PARAMETER_VALUES	Invalid request parameter value.
200	INVALID_PHOTO	Invalid file type or file size. Please make sure uploaded file type is JPG, JPEG, or PNG. and file size should be less than 10MB.
200	PAUSED_ACTIVITY	Activity is in paused state.
400	ID_PARAM_NAME_NOT_FOUND	IdParams name passed does not exist.
401	ERROR_UNAUTHORIZED	Some error occurred while authenticating your account at Trueloyal . Please verify your API credentials.
200	DUPLICATE_ORDER_ID	Loyalty Points already awarded for the Order ID.
200	MEMBER_CREATION_UNSUCCESSFUL	Member creation unsuccessful.
400	MERCHANT_DOES_NOT_EXIST	Merchant does not exist.
200	TRANSACTION_ATTRIBUTE_NOT_UNIQUE	Unique transaction attribute for given activity is not unique.
200	INVALID_MEMBER	Member does not exist.
400	INVALID_CURSOR	Invalid start cursor provided
503	SERVICE_UNAVAILABLE	API Service is unavailable. Please contact Trueloyal support.
200	INACTIVE_REWARD	This reward is inactive and cannot be redeemed.
200	AUTO_REDEEMABLE_REWARD	Cannot redeem auto redeemable reward via API.
200	INVALID_REWARD_FOR_USER	Returned product quantity exceeds order quantity.
200	MAX_REWARDS_EXCEEDED	Maximum redemption threshold for reward reached.
200	INSUFFICIENT_REDEEMABLE_POINTS	User points balance insufficient.
200	INVALID_REWARD_FOR_TIER	This reward is not valid for user tier.
200	ORDER_NOT_EXIST	Order with this id does not exist.
200	PRODUCT_QUANTITY_EXCEEDED	Returned product quantity exceeds order quantity.
200	INVALID_PRODUCT_ID	Incorrect product id passed.
200	RETURN_VALUE_EXCEEDS_AVAILABLE_BALANCE	Returned order value exceeds user's points balance.
200	PRODUCT_ID_AND_RETURN_AMOUNT_PASSED	Please pass either returned product id or returned amount.