Description:    "The specified access key does not exist.",
		HTTPStatusCode: http.StatusNotFound,
	},

	// S3 extensions.
	ErrContentSHA256Mismatch: {
		Code:           "XAmzContentSHA256Mismatch",
		Description:    "The provided 'x-amz-content-sha256' header does not match what was computed.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrContentChecksumMismatch: {