{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "type": "object",
    "required": [
        "analytics_identifier",
        "base_path",
        "content_id",
        "description",
        "details",
        "document_type",
        "email_document_supertype",
        "expanded_links",
        "first_published_at",
        "government_document_supertype",
        "govuk_request_id",
        "links",
        "locale",
        "navigation_document_supertype",
        "payload_version",
        "phase",
        "public_updated_at",
        "publishing_app",
        "redirects",
        "rendering_app",
        "routes",
        "schema_name",
        "title",
        "update_type",
        "user_journey_document_supertype"
    ],
    "additionalProperties": false,
    "properties": {
        "analytics_identifier": {
            "$ref": "#/definitions/analytics_identifier"
        },
        "base_path": {
            "$ref": "#/definitions/absolute_path"
        },
        "content_id": {
            "$ref": "#/definitions/guid"
        },
        "content_purpose_document_supertype": {
            "description": "DEPRECATED. Use `content_purpose_subgroup`.",
            "type": "string"
        },
        "content_purpose_subgroup": {
            "description": "Document subgroup grouping documents by purpose. Narrows down the purpose defined in content_purpose_supergroup.",
            "type": "string"
        },
        "content_purpose_supergroup": {
            "description": "Document supergroup grouping documents by a purpose",
            "type": "string"
        },
        "description": {
            "$ref": "#/definitions/description_optional"
        },
        "details": {
            "$ref": "#/definitions/details"
        },
        "document_type": {
            "type": "string",
            "enum": [
                "aaib_report",
                "asylum_support_decision",
                "business_finance_support_scheme",
                "cma_case",
                "uk_market_conformity_assessment_body",
                "countryside_stewardship_grant",
                "dfid_research_output",
                "drug_safety_update",
                "employment_appeal_tribunal_decision",
                "employment_tribunal_decision",
                "esi_fund",
                "export_health_certificate",
                "international_development_fund",
                "maib_report",
                "marine_notice",
                "medical_safety_alert",
                "raib_report",
                "residential_property_tribunal_decision",
                "service_standard_report",
                "statutory_instrument",
                "tax_tribunal_decision",
                "traffic_commissioner_regulatory_decision",
                "utaac_decision"
            ]
        },
        "email_document_supertype": {
            "description": "Document supertype grouping intended to power the Whitehall finders and email subscriptions",
            "type": "string"
        },
        "expanded_links": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "available_translations": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "child_taxons": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "children": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "document_collections": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "facet_groups": {
                    "description": "Prototype-stage metadata tagging tree roots for this content item. A content item my belong to many facet groups without having any specific facet_values links.",
                    "$ref": "#/definitions/frontend_links"
                },
                "facet_values": {
                    "description": "Prototype-stage metadata tagging values for this content item, a content item can be linked to many facet values from varying facet groups.",
                    "$ref": "#/definitions/frontend_links"
                },
                "finder": {
                    "description": "The finder for this specialist document.",
                    "$ref": "#/definitions/frontend_links_with_base_path",
                    "maxItems": 1
                },
                "lead_organisations": {
                    "description": "DEPRECATED: A subset of organisations that should be emphasised in relation to this content item. All organisations specified here should also be part of the organisations array.",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "level_one_taxons": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "mainstream_browse_pages": {
                    "description": "Powers the /browse section of the site. These are known as sections in some legacy apps.",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "meets_user_needs": {
                    "description": "The user needs this piece of content meets.",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "ministers": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links"
                },
                "ordered_related_items": {
                    "description": "Related items, can be any page on GOV.UK. Mostly used for mainstream content to power the sidebar. Ordering of the links is determined by the editor in Content Tagger.",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "ordered_related_items_overrides": {
                    "description": "Related items, can be any page on GOV.UK. Overrides 'more like this' automatically generated links in the beta navigation.",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "organisations": {
                    "description": "Associated organisations for this document",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "original_primary_publishing_organisation": {
                    "description": "The organisation that published the original version of the page. Corresponds to the first of the 'Lead organisations' in Whitehall for the first edition, and is empty for all other publishing applications.",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "parent": {
                    "description": "The parent content item.",
                    "$ref": "#/definitions/frontend_links_with_base_path",
                    "maxItems": 1
                },
                "part_of_step_navs": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "policies": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "policy_areas": {
                    "description": "A largely deprecated tag currently only used to power email alerts.",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "primary_publishing_organisation": {
                    "description": "The primary organisation for this document",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "related_to_step_navs": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "role_appointments": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links"
                },
                "secondary_to_step_navs": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "suggested_ordered_related_items": {
                    "description": "New A/B test suggestions for related items. Used for displaying related content on most pages, except for step-by-step and fatality notices. Links and their ordering are determined by the machine learning algorithms included in this A/B test.",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "taxons": {
                    "description": "Prototype-stage taxonomy label for this content item",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "topic_taxonomy_taxons": {
                    "description": "Link type automatically added by Publishing API",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                },
                "topics": {
                    "description": "Powers the /topic section of the site. These are known as specialist sectors in some legacy apps.",
                    "$ref": "#/definitions/frontend_links_with_base_path"
                }
            }
        },
        "first_published_at": {
            "$ref": "#/definitions/first_published_at"
        },
        "government_document_supertype": {
            "description": "Document supertype grouping intended to power the Whitehall finders and email subscriptions",
            "type": "string"
        },
        "govuk_request_id": {
            "$ref": "#/definitions/govuk_request_id"
        },
        "links": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "facet_groups": {
                    "description": "Prototype-stage metadata tagging tree roots for this content item. A content item my belong to many facet groups without having any specific facet_values links.",
                    "$ref": "#/definitions/guid_list"
                },
                "facet_values": {
                    "description": "Prototype-stage metadata tagging values for this content item, a content item can be linked to many facet values from varying facet groups.",
                    "$ref": "#/definitions/guid_list"
                },
                "finder": {
                    "description": "The finder for this specialist document.",
                    "$ref": "#/definitions/guid_list",
                    "maxItems": 1,
                    "minItems": 1
                },
                "lead_organisations": {
                    "description": "DEPRECATED: A subset of organisations that should be emphasised in relation to this content item. All organisations specified here should also be part of the organisations array.",
                    "$ref": "#/definitions/guid_list"
                },
                "mainstream_browse_pages": {
                    "description": "Powers the /browse section of the site. These are known as sections in some legacy apps.",
                    "$ref": "#/definitions/guid_list"
                },
                "meets_user_needs": {
                    "description": "The user needs this piece of content meets.",
                    "$ref": "#/definitions/guid_list"
                },
                "ordered_related_items": {
                    "description": "Related items, can be any page on GOV.UK. Mostly used for mainstream content to power the sidebar. Ordering of the links is determined by the editor in Content Tagger.",
                    "$ref": "#/definitions/guid_list"
                },
                "ordered_related_items_overrides": {
                    "description": "Related items, can be any page on GOV.UK. Overrides 'more like this' automatically generated links in the beta navigation.",
                    "$ref": "#/definitions/guid_list"
                },
                "organisations": {
                    "description": "Associated organisations for this document",
                    "$ref": "#/definitions/guid_list"
                },
                "original_primary_publishing_organisation": {
                    "description": "The organisation that published the original version of the page. Corresponds to the first of the 'Lead organisations' in Whitehall for the first edition, and is empty for all other publishing applications.",
                    "$ref": "#/definitions/guid_list"
                },
                "parent": {
                    "description": "The parent content item.",
                    "$ref": "#/definitions/guid_list",
                    "maxItems": 1
                },
                "policy_areas": {
                    "description": "A largely deprecated tag currently only used to power email alerts.",
                    "$ref": "#/definitions/guid_list"
                },
                "primary_publishing_organisation": {
                    "description": "The primary organisation for this document",
                    "$ref": "#/definitions/guid_list"
                },
                "suggested_ordered_related_items": {
                    "description": "New A/B test suggestions for related items. Used for displaying related content on most pages, except for step-by-step and fatality notices. Links and their ordering are determined by the machine learning algorithms included in this A/B test.",
                    "$ref": "#/definitions/guid_list"
                },
                "taxons": {
                    "description": "Prototype-stage taxonomy label for this content item",
                    "$ref": "#/definitions/guid_list"
                },
                "topics": {
                    "description": "Powers the /topic section of the site. These are known as specialist sectors in some legacy apps.",
                    "$ref": "#/definitions/guid_list"
                }
            }
        },
        "locale": {
            "$ref": "#/definitions/locale"
        },
        "navigation_document_supertype": {
            "description": "Document type grouping powering the new taxonomy-based navigation pages",
            "type": "string"
        },
        "need_ids": {
            "type": "array",
            "items": {
                "type": "string"
            }
        },
        "payload_version": {
            "$ref": "#/definitions/payload_version"
        },
        "phase": {
            "description": "The service design phase of this content item - https://www.gov.uk/service-manual/phases",
            "type": "string",
            "enum": [
                "alpha",
                "beta",
                "live"
            ]
        },
        "public_updated_at": {
            "$ref": "#/definitions/public_updated_at"
        },
        "publishing_app": {
            "$ref": "#/definitions/publishing_app_name"
        },
        "publishing_request_id": {
            "$ref": "#/definitions/publishing_request_id"
        },
        "redirects": {
            "type": "array",
            "additionalItems": false,
            "items": {}
        },
        "rendering_app": {
            "$ref": "#/definitions/rendering_app"
        },
        "routes": {
            "$ref": "#/definitions/routes"
        },
        "schema_name": {
            "type": "string",
            "enum": [
                "specialist_document"
            ]
        },
        "search_user_need_document_supertype": {
            "description": "Document supertype grouping core and government documents",
            "type": "string"
        },
        "title": {
            "$ref": "#/definitions/title"
        },
        "update_type": {
            "$ref": "#/definitions/update_type"
        },
        "user_journey_document_supertype": {
            "description": "Document type grouping powering analytics of user journeys",
            "type": "string"
        },
        "user_need_document_supertype": {
            "description": "DEPRECATED. Use `content_purpose_document_supertype`.",
            "type": "string"
        },
        "withdrawn_notice": {
            "$ref": "#/definitions/withdrawn_notice"
        }
    },
    "definitions": {
        "description": {
            "type": "string"
        },
        "aaib_report_metadata": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "aircraft_category": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "commercial-fixed-wing",
                            "commercial-rotorcraft",
                            "general-aviation-fixed-wing",
                            "general-aviation-rotorcraft",
                            "sport-aviation-and-balloons",
                            "unmanned-aircraft-systems"
                        ]
                    }
                },
                "aircraft_type": {
                    "type": "string"
                },
                "bulk_published": {
                    "type": "boolean"
                },
                "date_of_occurrence": {
                    "type": "string",
                    "pattern": "^[1-9][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[0-1])$"
                },
                "location": {
                    "type": "string"
                },
                "registration": {
                    "type": "string"
                },
                "report_type": {
                    "type": "string",
                    "enum": [
                        "annual-safety-report",
                        "correspondence-investigation",
                        "field-investigation",
                        "pre-1997-monthly-report",
                        "foreign-report",
                        "formal-report",
                        "special-bulletin",
                        "safety-study"
                    ]
                }
            }
        },
        "absolute_path": {
            "description": "A path only. Query string and/or fragment are not allowed.",
            "type": "string",
            "pattern": "^/(([a-zA-Z0-9._~!$&'()*+,;=:@-]|%[0-9a-fA-F]{2})+(/([a-zA-Z0-9._~!$&'()*+,;=:@-]|%[0-9a-fA-F]{2})*)*)?$"
        },
        "analytics_identifier": {
            "description": "A short identifier we send to Google Analytics for multi-valued fields. This means we avoid the truncated values we would get if we sent the path or slug of eg organisations.",
            "anyOf": [
                {
                    "type": "string"
                },
                {
                    "type": "null"
                }
            ]
        },
        "any_metadata": {
            "type": "object",
            "anyOf": [
                {
                    "$ref": "#/definitions/aaib_report_metadata"
                },
                {
                    "$ref": "#/definitions/asylum_support_decision_metadata"
                },
                {
                    "$ref": "#/definitions/business_finance_support_scheme_metadata"
                },
                {
                    "$ref": "#/definitions/cma_case_metadata"
                },
                {
                    "$ref": "#/definitions/uk_market_conformity_assessment_body_metadata"
                },
                {
                    "$ref": "#/definitions/countryside_stewardship_grant_metadata"
                },
                {
                    "$ref": "#/definitions/dfid_research_output_metadata"
                },
                {
                    "$ref": "#/definitions/drug_safety_update_metadata"
                },
                {
                    "$ref": "#/definitions/employment_appeal_tribunal_decision_metadata"
                },
                {
                    "$ref": "#/definitions/employment_tribunal_decision_metadata"
                },
                {
                    "$ref": "#/definitions/european_structural_investment_fund_metadata"
                },
                {
                    "$ref": "#/definitions/export_health_certificate_metadata"
                },
                {
                    "$ref": "#/definitions/international_development_fund_metadata"
                },
                {
                    "$ref": "#/definitions/maib_report_metadata"
                },
                {
                    "$ref": "#/definitions/marine_notice_metadata"
                },
                {
                    "$ref": "#/definitions/medical_safety_alert_metadata"
                },
                {
                    "$ref": "#/definitions/raib_report_metadata"
                },
                {
                    "$ref": "#/definitions/residential_property_tribunal_decision_metadata"
                },
                {
                    "$ref": "#/definitions/service_standard_report_metadata"
                },
                {
                    "$ref": "#/definitions/statutory_instrument_metadata"
                },
                {
                    "$ref": "#/definitions/tax_tribunal_decision_metadata"
                },
                {
                    "$ref": "#/definitions/traffic_commissioner_regulatory_decision_metadata"
                },
                {
                    "$ref": "#/definitions/utaac_decision_metadata"
                }
            ]
        },
        "asylum_support_decision_metadata": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "bulk_published": {
                    "type": "boolean"
                },
                "hidden_indexable_content": {
                    "type": "string"
                },
                "tribunal_decision_categories": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "section-4-1-support-for-persons-who-are-neither-an-asylum-seeker-nor-a-failed-asylum-seeker",
                            "section-4-2-support-for-failed-asylum-seekers",
                            "section-95-support-for-asylum-seekers"
                        ]
                    }
                },
                "tribunal_decision_category": {
                    "type": "string",
                    "enum": [
                        "section-4-1-support-for-persons-who-are-neither-an-asylum-seeker-nor-a-failed-asylum-seeker",
                        "section-4-2-support-for-failed-asylum-seekers",
                        "section-95-support-for-asylum-seekers"
                    ]
                },
                "tribunal_decision_decision_date": {
                    "type": "string",
                    "pattern": "^[1-9][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[0-1])$"
                },
                "tribunal_decision_judges": {
                    "type": "array",
                    "items": {
                        "type": "string"
                    }
                },
                "tribunal_decision_landmark": {
                    "type": "string",
                    "enum": [
                        "not-landmark",
                        "landmark"
                    ]
                },
                "tribunal_decision_reference_number": {
                    "type": "string"
                },
                "tribunal_decision_sub_categories": {
                    "type": "array",
                    "items": {
                        "type": "string"
                    }
                },
                "tribunal_decision_sub_category": {
                    "type": "string"
                }
            }
        },
        "body_html_and_govspeak": {
            "description": "The main content provided as HTML with the govspeak markdown it's rendered from",
            "anyOf": [
                {
                    "$ref": "#/definitions/multiple_content_types"
                }
            ]
        },
        "business_finance_support_scheme_metadata": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "bulk_published": {
                    "type": "boolean"
                },
                "business_sizes": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "between-10-and-249",
                            "between-250-and-500",
                            "over-500",
                            "under-10"
                        ]
                    }
                },
                "business_stages": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "established",
                            "not-yet-trading",
                            "start-up"
                        ]
                    }
                },
                "continuation_link": {
                    "type": "string"
                },
                "industries": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "agriculture-and-food",
                            "business-and-finance",
                            "construction",
                            "education",
                            "health",
                            "hospitality-and-catering",
                            "information-technology-digital-and-creative",
                            "life-sciences",
                            "manufacturing",
                            "mining",
                            "real-estate-and-property",
                            "science-and-technology",
                            "service-industries",
                            "transport-and-distribution",
                            "travel-and-leisure",
                            "utilities-providers",
                            "wholesale-and-retail"
                        ]
                    }
                },
                "regions": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "east-midlands",
                            "eastern",
                            "london",
                            "north-east",
                            "north-west",
                            "northern-ireland",
                            "scotland",
                            "south-east",
                            "south-west",
                            "wales",
                            "west-midlands",
                            "yorkshire-and-the-humber"
                        ]
                    }
                },
                "types_of_support": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "equity",
                            "expertise-and-advice",
                            "finance",
                            "grant",
                            "loan",
                            "recognition-award"
                        ]
                    }
                },
                "will_continue_on": {
                    "oneOf": [
                        {
                            "type": "string"
                        },
                        {
                            "type": "null"
                        }
                    ]
                }
            }
        },
        "change_history": {
            "type": "array",
            "items": {
                "type": "object",
                "required": [
                    "public_timestamp",
                    "note"
                ],
                "additionalProperties": false,
                "properties": {
                    "note": {
                        "description": "A summary of the change",
                        "type": "string"
                    },
                    "public_timestamp": {
                        "type": "string",
                        "_format": "date-time"
                    }
                }
            }
        },
        "cma_case_metadata": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "bulk_published": {
                    "type": "boolean"
                },
                "case_state": {
                    "type": "string",
                    "enum": [
                        "open",
                        "closed"
                    ]
                },
                "case_type": {
                    "type": "string",
                    "enum": [
                        "ca98-and-civil-cartels",
                        "competition-disqualification",
                        "criminal-cartels",
                        "markets",
                        "mergers",
                        "consumer-enforcement",
                        "regulatory-references-and-appeals",
                        "review-of-orders-and-undertakings",
                        "state-aid"
                    ]
                },
                "closed_date": {
                    "type": "string",
                    "pattern": "^[1-9][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[0-1])$"
                },
                "market_sector": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "aerospace",
                            "agriculture-environment-and-natural-resources",
                            "building-and-construction",
                            "chemicals",
                            "clothing-footwear-and-fashion",
                            "communications",
                            "defence",
                            "distribution-and-service-industries",
                            "electronics-industry",
                            "energy",
                            "engineering",
                            "financial-services",
                            "fire-police-and-security",
                            "food-manufacturing",
                            "giftware-jewellery-and-tableware",
                            "healthcare-and-medical-equipment",
                            "household-goods-furniture-and-furnishings",
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        "first_published_at": {
            "description": "The date the content was first published.  Automatically determined by the publishing-api, unless overridden by the publishing application.",
            "type": "string",
            "_format": "date-time"
        },
        "frontend_links": {
            "type": "array",
            "items": {
                "type": "object",
                "required": [
                    "content_id",
                    "locale",
                    "title"
                ],
                "additionalProperties": true,
                "properties": {
                    "analytics_identifier": {
                        "$ref": "#/definitions/analytics_identifier"
                    },
                    "api_path": {
                        "$ref": "#/definitions/absolute_path"
                    },
                    "api_url": {
                        "description": "DEPRECATED: api_path should be used instead of api_url. This is due to values of api_url being tied to an environment which can cause problems when data is synced between environments. In time this field will be removed by the Publishing Platform team.",
                        "type": "string",
                        "_format": "uri"
                    },
                    "base_path": {
                        "$ref": "#/definitions/absolute_path"
                    },
                    "content_id": {
                        "$ref": "#/definitions/guid"
                    },
                    "document_type": {
                        "type": "string"
                    },
                    "links": {
                        "type": "object",
                        "patternProperties": {
                            "^[a-z_]+$": {
                                "$ref": "#/definitions/frontend_links"
                            }
                        }
                    },
                    "locale": {
                        "$ref": "#/definitions/locale"
                    },
                    "public_updated_at": {
                        "oneOf": [
                            {
                                "$ref": "#/definitions/public_updated_at"
                            },
                            {
                                "type": "null"
                            }
                        ]
                    },
                    "schema_name": {
                        "type": "string"
                    },
                    "title": {
                        "type": "string"
                    },
                    "web_url": {
                        "description": "DEPRECATED: base_path should be used instead of web_url. This is due to values of web_url being tied to an environment which can cause problems when data is synced between environments. In time this field will be removed by the Publishing Platform team.",
                        "type": "string",
                        "_format": "uri"
                    }
                }
            }
        },
        "frontend_links_with_base_path": {
            "type": "array",
            "items": {
                "type": "object",
                "required": [
                    "base_path",
                    "content_id",
                    "locale",
                    "title"
                ],
                "additionalProperties": true,
                "properties": {
                    "analytics_identifier": {
                        "$ref": "#/definitions/analytics_identifier"
                    },
                    "api_path": {
                        "$ref": "#/definitions/absolute_path"
                    },
                    "api_url": {
                        "description": "DEPRECATED: api_path should be used instead of api_url. This is due to values of api_url being tied to an environment which can cause problems when data is synced between environments. In time this field will be removed by the Publishing Platform team.",
                        "type": "string",
                        "_format": "uri"
                    },
                    "base_path": {
                        "$ref": "#/definitions/absolute_path"
                    },
                    "content_id": {
                        "$ref": "#/definitions/guid"
                    },
                    "document_type": {
                        "type": "string"
                    },
                    "links": {
                        "type": "object",
                        "patternProperties": {
                            "^[a-z_]+$": {
                                "$ref": "#/definitions/frontend_links_with_base_path"
                            }
                        }
                    },
                    "locale": {
                        "$ref": "#/definitions/locale"
                    },
                    "public_updated_at": {
                        "oneOf": [
                            {
                                "$ref": "#/definitions/public_updated_at"
                            },
                            {
                                "type": "null"
                            }
                        ]
                    },
                    "schema_name": {
                        "type": "string"
                    },
                    "title": {
                        "type": "string"
                    },
                    "web_url": {
                        "description": "DEPRECATED: base_path should be used instead of web_url. This is due to values of web_url being tied to an environment which can cause problems when data is synced between environments. In time this field will be removed by the Publishing Platform team.",
                        "type": "string",
                        "_format": "uri"
                    }
                }
            }
        },
        "govuk_request_id": {
            "type": [
                "string",
                "null"
            ]
        },
        "guid": {
            "type": "string",
            "pattern": "^[a-f0-9]{8}-[a-f0-9]{4}-[1-5][a-f0-9]{3}-[89ab][a-f0-9]{3}-[a-f0-9]{12}$"
        },
        "guid_list": {
            "type": "array",
            "items": {
                "$ref": "#/definitions/guid"
            },
            "_uniqueItems": true
        },
        "international_development_fund_metadata": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "bulk_published": {
                    "type": "boolean"
                },
                "development_sector": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "agriculture",
                            "climate-change",
                            "disabilities",
                            "education",
                            "empowerment-and-accountability",
                            "environment",
                            "girls-and-women",
                            "health",
                            "humanitarian-emergencies-disasters",
                            "livelihoods",
                            "peace-and-access-to-justice",
                            "private-sector-business",
                            "technology",
                            "trade",
                            "water-and-sanitation"
                        ]
                    }
                },
                "eligible_entities": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "non-governmental-organisations",
                            "uk-based-non-profit-organisations",
                            "uk-based-small-and-diaspora-organisations",
                            "companies",
                            "local-government",
                            "educational-institutions",
                            "individuals",
                            "humanitarian-relief-organisations"
                        ]
                    }
                },
                "fund_state": {
                    "type": "string",
                    "enum": [
                        "open",
                        "closed"
                    ]
                },
                "location": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "afghanistan",
                            "albania",
                            "algeria",
                            "andorra",
                            "angola",
                            "antigua-and-barbuda",
                            "argentina",
                            "armenia",
                            "australia",
                            "austria",
                            "azerbaijan",
                            "bahamas",
                            "bahrain",
                            "bangladesh",
                            "barbados",
                            "belarus",
                            "belgium",
                            "belize",
                            "benin",
                            "bhutan",
                            "bolivia",
                            "bosnia-and-herzegovina",
                            "botswana",
                            "brazil",
                            "brunei",
                            "bulgaria",
                            "burkina-faso",
                            "burundi",
                            "cambodia",
                            "cameroon",
                            "canada",
                            "cape-verde",
                            "central-african-republic",
                            "chad",
                            "chile",
                            "china",
                            "colombia",
                            "comoros",
                            "congo",
                            "democratic-republic-of-congo",
                            "cook-islands",
                            "costa-rica",
                            "croatia",
                            "cuba",
                            "cyprus",
                            "czech-republic",
                            "denmark",
                            "djibouti",
                            "dominica",
                            "dominican-republic",
                            "east-timor",
                            "ecuador",
                            "egypt",
                            "el-salvador",
                            "equatorial-guinea",
                            "eritrea",
                            "estonia",
                            "ethiopia",
                            "fiji",
                            "finland",
                            "france",
                            "gabon",
                            "gambia",
                            "georgia",
                            "germany",
                            "ghana",
                            "greece",
                            "grenada",
                            "guatemala",
                            "guinea",
                            "guinea-bissau",
                            "guyana",
                            "haiti",
                            "honduras",
                            "hungary",
                            "iceland",
                            "india",
                            "indonesia",
                            "iran",
                            "iraq",
                            "ireland",
                            "israel",
                            "italy",
                            "cote-d-ivoire",
                            "jamaica",
                            "japan",
                            "jordan",
                            "kazakhstan",
                            "kenya",
                            "kiribati",
                            "kosovo",
                            "kuwait",
                            "kyrgyzstan",
                            "laos",
                            "latvia",
                            "lebanon",
                            "lesotho",
                            "liberia",
                            "libya",
                            "liechtenstein",
                            "lithuania",
                            "luxembourg",
                            "macedonia",
                            "madagascar",
                            "malawi",
                            "malaysia",
                            "maldives",
                            "mali",
                            "malta",
                            "marshall-islands",
                            "mauritania",
                            "mauritius",
                            "mexico",
                            "micronesia",
                            "moldova",
                            "monaco",
                            "mongolia",
                            "montenegro",
                            "morocco",
                            "mozambique",
                            "myanmar",
                            "namibia",
                            "nauru",
                            "nepal",
                            "netherlands",
                            "new-zealand",
                            "nicaragua",
                            "niger",
                            "nigeria",
                            "north-korea",
                            "norway",
                            "oman",
                            "pakistan",
                            "palau",
                            "the-occupied-palestinian-territories",
                            "panama",
                            "papua-new-guinea",
                            "paraguay",
                            "peru",
                            "philippines",
                            "poland",
                            "portugal",
                            "qatar",
                            "romania",
                            "russia",
                            "rwanda",
                            "samoa",
                            "san-marino",
                            "sao-tome-and-principe",
                            "saudi-arabia",
                            "senegal",
                            "serbia",
                            "seychelles",
                            "sierra-leone",
                            "singapore",
                            "slovakia",
                            "slovenia",
                            "solomon-islands",
                            "somalia",
                            "south-africa",
                            "south-korea",
                            "south-sudan",
                            "spain",
                            "sri-lanka",
                            "st-kitts-and-nevis",
                            "st-lucia",
                            "st-vincent",
                            "sudan",
                            "suriname",
                            "swaziland",
                            "sweden",
                            "switzerland",
                            "syria",
                            "tajikistan",
                            "tanzania",
                            "thailand",
                            "togo",
                            "tonga",
                            "trinidad-and-tobago",
                            "tunisia",
                            "turkey",
                            "turkmenistan",
                            "tuvalu",
                            "uganda",
                            "ukraine",
                            "united-arab-emirates",
                            "united-kingdom",
                            "united-states",
                            "uruguay",
                            "uzbekistan",
                            "vanuatu",
                            "vatican-city",
                            "venezuela",
                            "vietnam",
                            "yemen",
                            "zambia",
                            "zimbabwe"
                        ]
                    }
                },
                "value_of_funding": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "up-to-100000",
                            "100001-500000",
                            "500001-to-1000000",
                            "more-than-1000000"
                        ]
                    }
                }
            }
        },
        "locale": {
            "type": "string",
            "enum": [
                "ar",
                "az",
                "be",
                "bg",
                "bn",
                "cs",
                "cy",
                "da",
                "de",
                "dr",
                "el",
                "en",
                "es",
                "es-419",
                "et",
                "fa",
                "fi",
                "fr",
                "gd",
                "he",
                "hi",
                "hr",
                "hu",
                "hy",
                "id",
                "is",
                "it",
                "ja",
                "ka",
                "kk",
                "ko",
                "lt",
                "lv",
                "ms",
                "mt",
                "nl",
                "no",
                "pl",
                "ps",
                "pt",
                "ro",
                "ru",
                "si",
                "sk",
                "sl",
                "so",
                "sq",
                "sr",
                "sv",
                "sw",
                "ta",
                "th",
                "tk",
                "tr",
                "uk",
                "ur",
                "uz",
                "vi",
                "zh",
                "zh-hk",
                "zh-tw"
            ]
        },
        "maib_report_metadata": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "bulk_published": {
                    "type": "boolean"
                },
                "date_of_occurrence": {
                    "type": "string",
                    "pattern": "^[1-9][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[0-1])$"
                },
                "report_type": {
                    "type": "string",
                    "enum": [
                        "investigation-report",
                        "safety-bulletin",
                        "completed-preliminary-examination",
                        "overseas-report",
                        "discontinued-investigation"
                    ]
                },
                "vessel_type": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "merchant-vessel-100-gross-tons-or-over",
                            "merchant-vessel-under-100-gross-tons",
                            "fishing-vessel",
                            "recreational-craft-sail",
                            "recreational-craft-power"
                        ]
                    }
                }
            }
        },
        "marine_notice_metadata": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "bulk_published": {
                    "type": "boolean"
                },
                "issued_date": {
                    "type": "string",
                    "pattern": "^[1-9][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[0-1])$"
                },
                "marine_notice_topic": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "construction-and-equipment",
                            "crew-and-training",
                            "health-and-safety",
                            "environmental",
                            "navigation",
                            "radio-communications",
                            "registration",
                            "security-isps",
                            "survey-and-inspection"
                        ]
                    }
                },
                "marine_notice_type": {
                    "type": "string",
                    "enum": [
                        "marine-guidance-note",
                        "merchant-shipping-notice",
                        "marine-information-note",
                        "form",
                        "instructions-to-surveyors",
                        "codes-of-practice",
                        "safety-bulletin",
                        "other"
                    ]
                },
                "marine_notice_vessel_type": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "pleasure-vessels",
                            "small-commercial-vessels",
                            "cargo-vessels-over-24-metres",
                            "fishing-vessels-under-15-metres",
                            "fishing-vessels-15-24-metres",
                            "fishing-vessels-over-24-metres",
                            "high-speed-craft",
                            "large-yachts",
                            "passenger-vessels"
                        ]
                    }
                }
            }
        },
        "max_cache_time": {
            "description": "The maximum length of time the content should be cached, in seconds",
            "type": "integer"
        },
        "medical_safety_alert_metadata": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "alert_type": {
                    "type": "string",
                    "enum": [
                        "drugs",
                        "devices",
                        "field-safety-notices",
                        "company-led-drugs"
                    ]
                },
                "bulk_published": {
                    "type": "boolean"
                },
                "issued_date": {
                    "type": "string",
                    "pattern": "^[1-9][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[0-1])$"
                },
                "medical_specialism": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "anaesthetics",
                            "cardiology",
                            "care-home-staff",
                            "cosmetic-surgery",
                            "critical-care",
                            "dentistry",
                            "general-practice",
                            "general-surgery",
                            "haematology-oncology",
                            "infection-prevention",
                            "obstetrics-gynaecology",
                            "ophthalmology",
                            "orthopaedics",
                            "paediatrics",
                            "pathology",
                            "pharmacy",
                            "physiotherapy-occupational-therapy",
                            "radiology",
                            "renal-medicine",
                            "theatre-practitioners",
                            "urology",
                            "vascular-cardiac-surgery"
                        ]
                    }
                }
            }
        },
        "multiple_content_types": {
            "type": "array",
            "items": {
                "type": "object",
                "required": [
                    "content_type",
                    "content"
                ],
                "additionalProperties": false,
                "properties": {
                    "content": {
                        "type": "string"
                    },
                    "content_type": {
                        "type": "string"
                    }
                }
            }
        },
        "nested_headers": {
            "type": "array",
            "items": {
                "type": "object",
                "required": [
                    "text",
                    "level",
                    "id"
                ],
                "additionalProperties": false,
                "properties": {
                    "headers": {
                        "$ref": "#/definitions/nested_headers"
                    },
                    "id": {
                        "type": "string"
                    },
                    "level": {
                        "type": "integer"
                    },
                    "text": {
                        "type": "string"
                    }
                }
            },
            "minItems": 1
        },
        "payload_version": {
            "description": "Counter to indicate when the payload was generated",
            "type": "integer"
        },
        "public_updated_at": {
            "description": "When the content was last significantly changed (a major update). Shown to users.  Automatically determined by the publishing-api, unless overridden by the publishing application.",
            "type": "string",
            "_format": "date-time"
        },
        "publishing_app_name": {
            "description": "The application that published this item.",
            "type": "string",
            "enum": [
                "calculators",
                "calendars",
                "collections-publisher",
                "contacts",
                "content-publisher",
                "content-tagger",
                "email-alert-frontend",
                "external-link-tracker",
                "feedback",
                "frontend",
                "government-frontend",
                "hmrc-manuals-api",
                "info-frontend",
                "licencefinder",
                "local-links-manager",
                "manuals-frontend",
                "manuals-publisher",
                "maslow",
                "performanceplatform-big-screen-view",
                "publisher",
                "rummager",
                "search-admin",
                "search-api",
                "service-manual-publisher",
                "share-sale-publisher",
                "short-url-manager",
                "smartanswers",
                "special-route-publisher",
                "specialist-publisher",
                "static",
                "tariff",
                "travel-advice-publisher",
                "whitehall"
            ]
        },
        "publishing_request_id": {
            "description": "A unique identifier used to track publishing requests to rendered content",
            "oneOf": [
                {
                    "type": "string"
                },
                {
                    "type": "null"
                }
            ]
        },
        "raib_report_metadata": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "bulk_published": {
                    "type": "boolean"
                },
                "date_of_occurrence": {
                    "type": "string",
                    "pattern": "^[1-9][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[0-1])$"
                },
                "railway_type": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "heavy-rail",
                            "light-rail",
                            "metros",
                            "heritage-railways"
                        ]
                    }
                },
                "report_type": {
                    "type": "string",
                    "enum": [
                        "investigation-report",
                        "bulletin",
                        "interim-report",
                        "discontinuation-report",
                        "safety-digest"
                    ]
                }
            }
        },
        "rendering_app": {
            "description": "The application that renders this item.",
            "type": "string",
            "enum": [
                "calculators",
                "calendars",
                "collections",
                "content-store",
                "email-alert-frontend",
                "email-campaign-frontend",
                "feedback",
                "finder-frontend",
                "frontend",
                "government-frontend",
                "info-frontend",
                "licencefinder",
                "manuals-frontend",
                "performanceplatform-big-screen-view",
                "rummager",
                "search-api",
                "service-manual-frontend",
                "smartanswers",
                "spotlight",
                "static",
                "tariff",
                "whitehall-admin",
                "whitehall-frontend"
            ]
        },
        "residential_property_tribunal_decision_metadata": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
                "bulk_published": {
                    "type": "boolean"
                },
                "hidden_indexable_content": {
                    "type": "string"
                },
                "tribunal_decision_category": {
                    "type": "string",
                    "enum": [
                        "housing-act-2004-and-housing-and-planning-act-2016",
                        "leasehold-disputes-management",
                        "leasehold-enfranchisement-and-extension",
                        "park-homes",
                        "rents",
                        "right-to-buy",
                        "tenant-associations",
                        "tenant-fees-act"
                    ]
                },
                "tribunal_decision_decision_date": {
                    "type": "string",
                    "pattern": "^[1-9][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[0-1])$"
                },
                "tribunal_decision_sub_category": {
                    "type": "string",
                    "enum": [
                        "housing-act-2004-and-housing-and-planning-act-2016---rent-repayment-orders",
                        "housing-act-2004-and-housing-and-planning-act-2016---improvement-notices",
                        "housing-act-2004-and-housing-and-planning-act-2016---prohibition-orders",
                        "housing-act-2004-and-housing-and-planning-act-2016---demolition-and-closing-orders",
                        "housing-act-2004-and-housing-and-planning-act-2016---emergency-notices-and-orders",
                        "housing-act-2004-and-housing-and-planning-act-2016---empty-dwelling-management-orders",
                        "housing-act-2004-and-housing-and-planning-act-2016---houses-in-multiple-occupation-licensing",
                        "housing-act-2004-and-housing-and-planning-act-2016---selective-licensing",
                        "housing-act-2004-and-housing-and-planning-act-2016---banning-orders",
                        "housing-act-2004-and-housing-and-planning-act-2016---civil-financial-penalties",
                        "housing-act-2004-and-housing-and-planning-act-2016---management-orders",
                        "housing-act-2004-and-housing-and-planning-act-2016---overcrowding-notices",
                        "leasehold-disputes-management---service-charges",
                        "leasehold-disputes-management---administration-charges",
                        "leasehold-disputes-management---appointment-of-manager",
                        "leasehold-disputes-management---right-to-manage",
                        "leasehold-disputes-management---variation-of-leases",
                        "leasehold-disputes-management---breach-of-lease-forfeiture",
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