{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "description": "standard request error data structure",
    "properties": {
        "messageId": {
            "description": "Unique message identifier of the format ABCnnnn where ABC is either SVC for Service Exceptions or POL for Policy Exception",
            "type": "string"
        },
        "text": {
            "description": "Message text, with replacement variables marked with %n, where n is an index into the list of <variables> elements, starting at 1",
            "type": "string"
        },
        "url": {
            "description": "Hyperlink to a detailed error resource e.g., an HTML page for browser user agents",
            "type": "string"
        },
        "variables": {
            "description": "List of zero or more strings that represent the contents of the variables used by the message text",
            "type": "string"
        }
    },
    "required": [
        "messageId",
        "text"
    ],
    "type": "object"
}