diff --git a/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devicecredentials_get.json b/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devicecredentials_get.json
index 451ef32d72c5..fca7fc82f2c1 100644
--- a/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devicecredentials_get.json
+++ b/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devicecredentials_get.json
@@ -9,7 +9,7 @@
   "responses": {
     "200": {
       "body": {
-        "idScope": "0ne0005F266",
+        "idScope": "<idScope>",
         "symmetricKey": {
           "primaryKey": "XaMfV3vryCQw963L2IALf1SdApQRzSIBQd13/fassqM=",
           "secondaryKey": "s+4uT31TRZJcTSGxZUPZb1yznjTicu4jr9tXNrg+xIQ="
diff --git a/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set_symmetricKey.json b/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set_symmetricKey.json
new file mode 100644
index 000000000000..42fdabd7c518
--- /dev/null
+++ b/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set_symmetricKey.json
@@ -0,0 +1,27 @@
+{
+  "title": "Set device attestation - Symmetric key",
+  "description": "Creates or updates the symmetric key attestation for a device.",
+  "parameters": {
+    "centralDnsSuffixInPath": "azureiotcentral.com",
+    "subdomain": "appsubdomain",
+    "device_id": "CheckoutThermostat",
+    "body": {
+      "type": "SymmetricKeyAttestation",
+      "symmetricKey": {
+        "primaryKey": "XaMfV3vryCQw963L2IALf1SdApQRzSIBQd13/fassqM=",
+        "secondaryKey": "s+4uT31TRZJcTSGxZUPZb1yznjTicu4jr9tXNrg+xIQ="
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "type": "SymmetricKeyAttestation",
+        "symmetricKey": {
+          "primaryKey": "XaMfV3vryCQw963L2IALf1SdApQRzSIBQd13/fassqM=",
+          "secondaryKey": "s+4uT31TRZJcTSGxZUPZb1yznjTicu4jr9tXNrg+xIQ="
+        }
+      }
+    }
+  }
+}
diff --git a/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set_tpm.json b/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set_tpm.json
new file mode 100644
index 000000000000..35fb1496150d
--- /dev/null
+++ b/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set_tpm.json
@@ -0,0 +1,25 @@
+{
+  "title": "Set device attestation - TPM",
+  "description": "Creates or updates the TPM attestation for a device.",
+  "parameters": {
+    "centralDnsSuffixInPath": "azureiotcentral.com",
+    "subdomain": "appsubdomain",
+    "device_id": "CheckoutThermostat",
+    "body": {
+      "type": "TpmAttestation",
+      "tpm": {
+        "endorsementKey": "AToAAQALAAMAsgAgg3GXZ0SEs/gakMyNRqXXJP1S124GUgtk8qHaGzMUaaoABgCAAEMAEAgAAAAAAAEAxsj2gUScTk1UjuioeTlfGYZrrimExB+bScH75adUMRIi2UOMxG1kw4y+9RW/IVoMl4e620VxZad0ARX2gUqVjYO7KPVt3dyKhZS3dkcvfBisBhP1XH9B33VqHG9SHnbnQXdBUaCgKAfxome8UmBKfe+naTsE5fkvjb/do3/dD6l4sGBwFCnKRdln4XpM03zLpoHFao8zOwt8l/uP3qUIxmCYv9A7m69Ms+5/pCkTu/rK4mRDsfhZ0QLfbzVI6zQFOKF/rwsfBtFeWlWtcuJMKlXdD8TXWElTzgh7JS4qhFzreL0c1mI0GCj+Aws0usZh7dLIVPnlgZcBhgy1SSDQMQ=="
+      }
+    }
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "type": "TpmAttestation",
+        "tpm": {
+          "endorsementKey": "AToAAQALAAMAsgAgg3GXZ0SEs/gakMyNRqXXJP1S124GUgtk8qHaGzMUaaoABgCAAEMAEAgAAAAAAAEAxsj2gUScTk1UjuioeTlfGYZrrimExB+bScH75adUMRIi2UOMxG1kw4y+9RW/IVoMl4e620VxZad0ARX2gUqVjYO7KPVt3dyKhZS3dkcvfBisBhP1XH9B33VqHG9SHnbnQXdBUaCgKAfxome8UmBKfe+naTsE5fkvjb/do3/dD6l4sGBwFCnKRdln4XpM03zLpoHFao8zOwt8l/uP3qUIxmCYv9A7m69Ms+5/pCkTu/rK4mRDsfhZ0QLfbzVI6zQFOKF/rwsfBtFeWlWtcuJMKlXdD8TXWElTzgh7JS4qhFzreL0c1mI0GCj+Aws0usZh7dLIVPnlgZcBhgy1SSDQMQ=="
+        }
+      }
+    }
+  }
+}
diff --git a/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set.json b/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set_x509.json
similarity index 85%
rename from specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set.json
rename to specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set_x509.json
index e86eff41a42d..c468cbb516a1 100644
--- a/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set.json
+++ b/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/examples/devices_attestations_set_x509.json
@@ -1,6 +1,6 @@
 {
-  "title": "Set device attestation",
-  "description": "Creates or updates the attestation for a device.",
+  "title": "Set device attestation - X509",
+  "description": "Creates or updates the X509 attestation for a device.",
   "parameters": {
     "centralDnsSuffixInPath": "azureiotcentral.com",
     "subdomain": "appsubdomain",
diff --git a/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/iotcentral.json b/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/iotcentral.json
index 6fb9f5835b06..4603ceb86cb8 100644
--- a/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/iotcentral.json
+++ b/specification/iotcentral/data-plane/Microsoft.IoTCentral/preview/2019-10-28-preview/iotcentral.json
@@ -76,6 +76,7 @@
       "discriminator": "type"
     },
     "SymmetricKeyAttestation": {
+      "x-ms-discriminator-value": "SymmetricKeyAttestation",
       "allOf": [
         {
           "$ref": "#/definitions/Attestation"
@@ -95,6 +96,7 @@
       ]
     },
     "X509Attestation": {
+      "x-ms-discriminator-value": "X509Attestation",
       "allOf": [
         {
           "$ref": "#/definitions/Attestation"
@@ -114,6 +116,7 @@
       ]
     },
     "TpmAttestation": {
+      "x-ms-discriminator-value": "TpmAttestation",
       "allOf": [
         {
           "$ref": "#/definitions/Attestation"
@@ -1549,8 +1552,14 @@
           }
         ],
         "x-ms-examples": {
-          "Create or update device attestation": {
-            "$ref": "./examples/devices_attestations_set.json"
+          "Create or update device attestation - Symmetric Key": {
+            "$ref": "./examples/devices_attestations_set_symmetricKey.json"
+          },
+          "Create or update device attestation - X509": {
+            "$ref": "./examples/devices_attestations_set_x509.json"
+          },
+          "Create or update device attestation - TPM": {
+            "$ref": "./examples/devices_attestations_set_tpm.json"
           }
         },
         "responses": {