diff --git a/scripts/validate_schema.sh b/scripts/validate_schema.sh
index 1dd345ee27012cc32617b164f028b67f90d21c5a..6cf323d4c25e030c9604674932d3a73c23131ce8 100755
--- a/scripts/validate_schema.sh
+++ b/scripts/validate_schema.sh
@@ -14,6 +14,8 @@ ajv compile -s $SCHEMAS/registrations/ContextSourceNotification.json -r $SCHEMAS
 
 ajv compile -s $SCHEMAS/EntityList.json -r $SCHEMAS/common.json -r $SCHEMAS/geometry-schema.json -r $SCHEMAS/Entity.json
 
+ajv compile -s $SCHEMAS/subscriptions/SubscriptionList.json -r $SCHEMAS/common.json -r $SCHEMAS/geometry-schema.json -r $SCHEMAS/subscriptions/Subscription.json
+
 ajv compile -s $SCHEMAS/temporal/EntityTemporalList.json  -r $SCHEMAS/temporal/EntityTemporal.json -r $SCHEMAS/Entity.json -r $SCHEMAS/common.json -r $SCHEMAS/geometry-schema.json
 
 ajv compile -s $SCHEMAS/BatchOperationResult.json -r $SCHEMAS/common.json
diff --git a/spec/updated/subscription-by-id-spec.json b/spec/updated/subscription-by-id-spec.json
new file mode 100644
index 0000000000000000000000000000000000000000..8923baf1f873886a00d32994ea916237da006ef5
--- /dev/null
+++ b/spec/updated/subscription-by-id-spec.json
@@ -0,0 +1,105 @@
+{
+  "openapi": "3.0.1",
+  "info": {
+    "title": "NGSI-LD Subscription By Id",
+    "version": "latest"
+  },
+  "components": {
+    "parameters": {
+      "subscriptionId": {
+        "name": "subscriptionId",
+        "description": "Subscription Id",
+        "in": "path",
+        "required": true,
+        "schema": {
+          "type": "string",
+          "format": "uri"
+        }
+      }
+    }
+  },
+  "paths": {
+    "/subscriptions/{subscriptionId}": {
+      "get": {
+         "description": "Retrieves a specific Subscription from an NGSI-LD system",
+         "operationId": "retrieveSubscription",
+        "parameters": [
+          {
+            "$ref": "#/components/parameters/subscriptionId"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "content": {
+              "application/json;application/ld+json": {
+                "schema": {
+                  "$ref": "https://forge.etsi.org/gitlab/NGSI-LD/NGSI-LD/raw/master/schema/subscriptions/Subscription.json#/definitions/Subscription"
+                },
+                "examples": {
+                  "simple": {
+                    "externalValue": "https://forge.etsi.org/gitlab/NGSI-LD/NGSI-LD/raw/master/examples/Subscription-example_C.4.json"
+                  }
+                }
+              }
+            }
+          },
+          "400": {
+            "description": "Bad request",
+            "content": {
+              "application/json;application/ld+json": {
+                "schema": {
+                  "$ref": "https://forge.etsi.org/gitlab/NGSI-LD/NGSI-LD/raw/master/schema/common.json#/definitions/ProblemDetails"
+                }
+              }
+            }
+          },
+          "404": {
+            "description": "Not Found",
+            "content": {
+              "application/json;application/ld+json": {
+                "schema": {
+                  "$ref": "https://forge.etsi.org/gitlab/NGSI-LD/NGSI-LD/raw/master/schema/common.json#/definitions/ProblemDetails"
+                }
+              }
+            }
+          }
+        }
+      },
+      "delete": {
+        "description": "Removes a specific Subscription from an NGSI-LD system",
+        "operationId": "removeSubscription",
+        "parameters": [
+          {
+            "$ref": "#/components/parameters/subscriptionId"
+          }
+        ],
+        "responses": {
+          "204": {
+            "description": "No Content. The Subscription was removed successfully"
+          },
+          "400": {
+            "description": "Bad Request",
+            "content": {
+              "application/json;application/ld+json": {
+                "schema": {
+                  "$ref": "https://forge.etsi.org/gitlab/NGSI-LD/NGSI-LD/raw/master/schema/common.json#/definitions/ProblemDetails"
+                }
+              }
+            }
+          },
+          "404": {
+            "description": "Not Found",
+            "content": {
+              "application/json;application/ld+json": {
+                "schema": {
+                  "$ref": "https://forge.etsi.org/gitlab/NGSI-LD/NGSI-LD/raw/master/schema/common.json#/definitions/ProblemDetails"
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
\ No newline at end of file