diff --git a/schemas/0.1.2-preview/CreateUIDefinition.CommonControl.json b/schemas/0.1.2-preview/CreateUIDefinition.CommonControl.json
index 336fc48442..9e4b555c16 100644
--- a/schemas/0.1.2-preview/CreateUIDefinition.CommonControl.json
+++ b/schemas/0.1.2-preview/CreateUIDefinition.CommonControl.json
@@ -43,6 +43,9 @@
     },
     {
       "$ref": "#/definitions/Microsoft.Common.EditableGrid"
+    },
+    {
+      "$ref": "#/definitions/Microsoft.Common.ServicePrincipalSelector"
     }
   ],
   "definitions": {
@@ -974,6 +977,109 @@
         "ariaLabel",
         "constraints"
       ]
+    },
+    "Microsoft.Common.ServicePrincipalSelector": {
+      "type": "object",
+      "properties": {
+        "name": {
+          "type": "string"
+        },
+        "type": {
+          "type": "string",
+          "enum": [
+            "Microsoft.Common.ServicePrincipalSelector"
+          ]
+        },
+        "label": {
+          "type": "object",
+          "properties": {
+            "principalId": {
+              "type": "string"
+            },
+            "password": {
+              "type": "string"
+            },
+            "certificateThumbprint": {
+              "type": "string"
+            },
+            "authenticationType": {
+              "type": "string"
+            },
+            "sectionHeader": {
+              "type": "string"
+            }
+          }
+        },
+        "toolTip": {
+          "type": "object",
+          "properties": {
+            "principalId": {
+              "type": "string"
+            },
+            "password": {
+              "type": "string"
+            },
+            "certificateThumbprint": {
+              "type": "string"
+            },
+            "authenticationType": {
+              "type": "string"
+            }
+          }
+        },
+        "defaultValue": {
+          "type": "object",
+          "properties": {
+            "principalId": {
+              "type": "string"
+            },
+            "name": {
+              "type": "string"
+            }
+          }
+        },
+        "visible": {
+          "type": [
+            "boolean",
+            "string"
+          ]
+        },
+        "options": {
+          "type": "object",
+          "properties": {
+            "hideCertificate": {
+              "type": [
+                "boolean",
+                "string"
+              ]
+            }
+          },
+          "additionalProperties": false
+        },
+        "constraints": {
+          "type": "object",
+          "properties": {
+            "required": {
+              "type": [
+                "boolean",
+                "string"
+              ]
+            },
+            "regex": {
+              "type": "string"
+            },
+            "validationMessage": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        }
+      },
+      "additionalProperties": false,
+      "required": [
+        "name",
+        "type"
+      ]
     }
   }
 }
\ No newline at end of file