Java Spring Error Codes

The following is a list of error codes that are generated by the Java Spring libraries that implement Storefront Gateway.

HTTP Status	Spring-generated Code	Description
400	`BIND_EXCEPTION`	Internal binding that results from bad user input
`HTTP_MESSAGE_NOT_READABLE`	Failure to parse a POST request payload
`MISSING_SERVLET_REQUEST_PARAMETER`	Bad user input
`METHOD_ARGUMENT_NOT_VALID`	User input validation error
`SERVLET_REQUEST_BINDING`	Failure to interpret user input
`TYPE_MISMATCH`	Failure to convert input parameters
401	`UNAUTHORIZED`	Thrown as a part of any authentication failure
403	`ACCESS_FORBIDDEN`	Access is denied. You do not have the required permissions to access this Storefront Gateway resource.
405	`HTTP_REQUEST_METHOD_NOT_SUPPORTED`	Request handler does not support the used method. See HTTP Verbs.
406	`HTTP_MEDIA_TYPE_NOT_ACCEPTABLE`	Request handler cannot generate a response that is acceptable by the client
500	`CONVERSION_NOT_SUPPORTED`	Failure to interpret user input
500	`HTTP_MESSAGE_NOT_WRITABLE`	Failure to generate a response payload
500	`MISSING_SERVLET_REQUEST_PART`	Missing multi-part
	`HTTP_MEDIA_TYPE_NOT_SUPPORTED`	The client PUT, POSTed, or PATCHed content of an unsupported media type