diff --git a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/Pipeline.json b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/Pipeline.json
index c198991cf30c..8f7f2d25fc8e 100644
--- a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/Pipeline.json
+++ b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/Pipeline.json
@@ -78,6 +78,31 @@
           "description": "Activity description.",
           "type": "string"
         },
+        "state": {
+          "description": "Activity state. This is an optional property and if not provided, the state will be Active by default.",
+          "type": "string",
+          "enum": [
+            "Active",
+            "Inactive"
+          ],
+          "x-ms-enum": {
+            "name": "ActivityState",
+            "modelAsString": true
+          }
+        },
+        "onInactiveMarkAs": {
+          "description": "Status result of the activity when the state is set to Inactive. This is an optional property and if not provided when the activity is inactive, the status will be Succeeded by default.",
+          "type": "string",
+          "enum": [
+            "Succeeded",
+            "Failed",
+            "Skipped"
+          ],
+          "x-ms-enum": {
+            "name": "ActivityOnInactiveMarkAs",
+            "modelAsString": true
+          }
+        },
         "dependsOn": {
           "type": "array",
           "description": "Activity depends on condition.",