Shopify GraphQL API / CheckoutErrorCode
Possible error codes that can be returned by `CheckoutUserError`.
Possible Values
- BLANK
 - INVALID
 - TOO_LONG
 - PRESENT
 - LESS_THAN
 - GREATER_THAN_OR_EQUAL_TO
 - LESS_THAN_OR_EQUAL_TO
 - ALREADY_COMPLETED
 - LOCKED
 - NOT_SUPPORTED
 - BAD_DOMAIN
 - INVALID_FOR_COUNTRY
 - INVALID_FOR_COUNTRY_AND_PROVINCE
 - INVALID_STATE_IN_COUNTRY
 - INVALID_PROVINCE_IN_COUNTRY
 - INVALID_REGION_IN_COUNTRY
 - SHIPPING_RATE_EXPIRED
 - GIFT_CARD_UNUSABLE
 - GIFT_CARD_DISABLED
 - GIFT_CARD_CODE_INVALID
 - GIFT_CARD_ALREADY_APPLIED
 - GIFT_CARD_CURRENCY_MISMATCH
 - GIFT_CARD_EXPIRED
 - GIFT_CARD_DEPLETED
 - GIFT_CARD_NOT_FOUND
 - CART_DOES_NOT_MEET_DISCOUNT_REQUIREMENTS_NOTICE
 - DISCOUNT_EXPIRED
 - DISCOUNT_DISABLED
 - DISCOUNT_LIMIT_REACHED
 - DISCOUNT_NOT_FOUND
 - CUSTOMER_ALREADY_USED_ONCE_PER_CUSTOMER_DISCOUNT_NOTICE
 - EMPTY
 - NOT_ENOUGH_IN_STOCK
 - MISSING_PAYMENT_INPUT
 - TOTAL_PRICE_MISMATCH
 - LINE_ITEM_NOT_FOUND
 - UNABLE_TO_APPLY
 - DISCOUNT_ALREADY_APPLIED
 - THROTTLED_DURING_CHECKOUT
 - EXPIRED_QUEUE_TOKEN
 - INVALID_QUEUE_TOKEN
 - INVALID_COUNTRY_AND_CURRENCY