Changes to Get coupon by code

added the new not_implemented enum value to the code response property for the response status 400

added the new not_implemented enum value to the code response property for the response status 404

added the new not_implemented enum value to the code response property for the response status 500

the status response's property type changed from no type to string for status 200

added the new archived enum value to the status response property for the response status 200

added the new deleted enum value to the status response property for the response status 200

added the new published enum value to the status response property for the response status 200

the created_at response's property format changed from date-time to no format for status 200

the status response's property type changed from string to no type for status 200

the updated_at response's property format changed from date-time to no format for status 200

removed the archived enum value from the status response property for the response status 200

removed the deleted enum value from the status response property for the response status 200

removed the published enum value from the status response property for the response status 200

endpoint added