diff --git a/OperationalPoint/schema.json b/OperationalPoint/schema.json
index a668156..994c766 100644
--- a/OperationalPoint/schema.json
+++ b/OperationalPoint/schema.json
@@ -1,95 +1,95 @@
 {
-    "$schema": "http://json-schema.org/schema#",
-    "$schemaVersion": "0.0.1",
-    "$id": "https://smart-data-models.github.io/dataModel.ERA/Certificate/schema.json",
-    "modelTags": "ERA vocabulary, railway, train",
-    "license": "https://smart-data-models.github.io/dataModel.ERA/Certificate/LICENSE.md",
-    "derivedFrom": "http://data.europa.eu/949/OperationalPoint",
-    "type": "object",
-    "allOf": [
-        {
-            "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/GSMA-Commons"
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$schemaVersion": "0.0.1",
+  "$id": "https://smart-data-models.github.io/dataModel.ERA/Certificate/schema.json",
+  "modelTags": "ERA vocabulary, railway, train",
+  "license": "https://smart-data-models.github.io/dataModel.ERA/Certificate/LICENSE.md",
+  "derivedFrom": "http://data.europa.eu/949/OperationalPoint",
+  "type": "object",
+  "allOf": [
+    {
+      "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/GSMA-Commons"
+    },
+    {
+      "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/Location-Commons"
+    },
+    {
+      "properties": {
+        "type": {
+          "type": "string",
+          "enum": [
+            "OperationalPoint"
+          ],
+          "description": "Property. NGSI data type. It has to be OperationalPoint"
         },
-        {
-            "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/Location-Commons"
+        "digitalSchematicOverview": {
+          "type": "string",
+          "description": "Property. Digital schematic overview"
         },
-        {
-            "properties": {
-                "type": {
-                    "type": "string",
-                    "enum": [
-                        "OperationalPoint"
-                    ],
-                    "description": "Property. NGSI data type. It has to be OperationalPoint"
-                },
-                "digitalSchematicOverview": {
-                    "type": "string",
-                    "description": "Property. Digital schematic overview"
-                },
-                "hasSchematicOverviewOPDigitalForm": {
-                    "type": "boolean",
-                    "description": "Property. Has schematic overview in digital form"
-                },
-                "localRulesOrRestrictions": {
-                    "type": "boolean",
-                    "description": "Property. Existence of rules and restrictions of a strictly local nature."
-                },
-                "localRulesOrRestrictionsDoc": {
-                    "type": "string",
-                    "description": "Property. Documents regarding the rules or restrictions of a strictly local nature available by the IM"
-                },
-                "opName": {
-                    "type": "string",
-                    "description": "Property. Name of Operational point"
-                },
-                "opTypeGaugeChangeover": {
-                    "type": "string",
-                    "description": "Property. Type of track gauge changeover facility"
-                },
-                "schematicOverviewOP": {
-                    "type": "string",
-                    "description": "Property. Schematic overview of the operational point"
-                },
-                "tafTAPCode": {
-                    "type": "string",
-                    "description": "Property. Primary location code developed for information exchange in accordance with the TSIs relating to telematics applications."
-                },
-                "uopid": {
-                    "type": "string",
-                    "description": "Property. Unique OP ID"
-                },
-                "borderPointOf": {
-                    "type": "string",
-                    "format": "uri",
-                    "description": "Relationship. Border point of"
-                },
-                "opInfoPerCountry": {
-                    "type": "string",
-                    "format": "uri",
-                    "description": "Relationship. Border point information per country"
-                },
-                "opType": {
-                    "type": "string",
-                    "format": "uri",
-                    "description": "Relationship. Type of operational point"
-                },
-                "siding": {
-                    "type": "string",
-                    "format": "uri",
-                    "description": "Relationship. Siding"
-                },
-                "track": {
-                    "type": "string",
-                    "format": "uri",
-                    "description": "Relationship. Track"
-                }
-            }
+        "hasSchematicOverviewOPDigitalForm": {
+          "type": "boolean",
+          "description": "Property. Has schematic overview in digital form"
+        },
+        "localRulesOrRestrictions": {
+          "type": "boolean",
+          "description": "Property. Existence of rules and restrictions of a strictly local nature."
+        },
+        "localRulesOrRestrictionsDoc": {
+          "type": "string",
+          "description": "Property. Documents regarding the rules or restrictions of a strictly local nature available by the IM"
+        },
+        "opName": {
+          "type": "string",
+          "description": "Property. Name of Operational point"
+        },
+        "opTypeGaugeChangeover": {
+          "type": "string",
+          "description": "Property. Type of track gauge changeover facility"
+        },
+        "schematicOverviewOP": {
+          "type": "string",
+          "description": "Property. Schematic overview of the operational point"
+        },
+        "tafTAPCode": {
+          "type": "string",
+          "description": "Property. Primary location code developed for information exchange in accordance with the TSIs relating to telematics applications."
+        },
+        "uopid": {
+          "type": "string",
+          "description": "Property. Unique OP ID"
+        },
+        "borderPointOf": {
+          "type": "string",
+          "format": "uri",
+          "description": "Relationship. Border point of"
+        },
+        "opInfoPerCountry": {
+          "type": "string",
+          "format": "uri",
+          "description": "Relationship. Border point information per country"
+        },
+        "opType": {
+          "type": "string",
+          "format": "uri",
+          "description": "Relationship. Type of operational point"
+        },
+        "siding": {
+          "type": "string",
+          "format": "uri",
+          "description": "Relationship. Siding"
+        },
+        "track": {
+          "type": "string",
+          "format": "uri",
+          "description": "Relationship. Track"
         }
-    ],
-    "required": [
-        "id",
-        "type"
-    ],
-    "title": "OperationalPoint + mapped from ERA ontology by Smart Data Models",
-    "description": "An operational point (OP) means any location for train service operations, where train services may begin and end or change route, and where passenger or freight services may be provided; operational point also means any location at boundaries between Member States or infrastructure managers.\nIn https://eur-lex.europa.eu/eli/reg_impl/2019/773/oj 2.1.2 Principal locations (stations, yards, junctions, freight terminals)."
+      }
+    }
+  ],
+  "required": [
+    "id",
+    "type"
+  ],
+  "title": "OperationalPoint + mapped from ERA ontology by Smart Data Models",
+  "description": "An operational point (OP) means any location for train service operations, where train services may begin and end or change route, and where passenger or freight services may be provided; operational point also means any location at boundaries between Member States or infrastructure managers.\nIn https://eur-lex.europa.eu/eli/reg_impl/2019/773/oj 2.1.2 Principal locations (stations, yards, junctions, freight terminals)."
 }
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