diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/ConnectToSourceSqlServerTask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/ConnectToSourceSqlServerTask.json
index 1934f08b0f26..03def3fd0d04 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/ConnectToSourceSqlServerTask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/ConnectToSourceSqlServerTask.json
@@ -38,16 +38,16 @@
       "type": "object",
       "description": "Output for the task that validates connection to SQL Server and also validates source server requirements",
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "resultType": {
           "description": "Type of result - database level or task level",
           "type": "string"
         }
       },
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ],
       "required": [ "resultType" ],
       "discriminator": "resultType"
     },
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/ConnectToTargetSqlDbTask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/ConnectToTargetSqlDbTask.json
index 20994f9a8832..8b79f3bfb203 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/ConnectToTargetSqlDbTask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/ConnectToTargetSqlDbTask.json
@@ -34,6 +34,11 @@
       "type": "object",
       "description": "Output for the task that validates connection to SQL DB and target server requirements",
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "databases": {
           "type": "string",
           "description": "Source databases as a map from database name to database id",
@@ -52,12 +57,7 @@
           "description": "Target server brand version",
           "readOnly": true
         }
-      },
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ]
+      }
     }
   }
 }
\ No newline at end of file
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/GetUserTablesSqlTask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/GetUserTablesSqlTask.json
index bec14a5f6454..c1236ddabf1f 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/GetUserTablesSqlTask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/GetUserTablesSqlTask.json
@@ -42,6 +42,11 @@
       "type": "object",
       "description": "Output of the task that collects user tables for the given list of databases",
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "databasesToTables": {
           "type": "string",
           "description": "Mapping from database name to list of tables",
@@ -61,12 +66,7 @@
           },
           "readOnly": true
         }
-      },
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ]
+      }
     },
     "DatabaseTable": {
       "type": "object",
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/MigrateSqlServerSqlDbTask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/MigrateSqlServerSqlDbTask.json
index 44da12eca9e2..3b09e8bb79a9 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/MigrateSqlServerSqlDbTask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/MigrateSqlServerSqlDbTask.json
@@ -46,16 +46,16 @@
       "type": "object",
       "description": "Output for the task that migrates on-prem SQL Server databases to Azure SQL Database",
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "resultType": {
           "description": "Result type",
           "type": "string"
         }
       },
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ],
       "required": [ "resultType" ],
       "discriminator": "resultType"
     },
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/TasksCommon.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/TasksCommon.json
index 21c13fed3d50..a644bd19b41e 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/TasksCommon.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2017-11-15-preview/definitions/TasksCommon.json
@@ -17,17 +17,6 @@
   },
   "paths": {},
   "definitions": {
-    "TaskOutput": {
-      "type": "object",
-      "description": "Base class for all DMS task outputs",
-      "properties": {
-        "id": {
-          "type": "string",
-          "description": "Result identifier",
-          "readOnly": true
-        }
-      }
-    },
     "Database": {
       "type": "object",
       "description": "Information about a single database",
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToSourceSqlServerTask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToSourceSqlServerTask.json
index 78b3551bb4c6..5e6f61c639c3 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToSourceSqlServerTask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToSourceSqlServerTask.json
@@ -38,16 +38,16 @@
       "type": "object",
       "description": "Output for the task that validates connection to SQL Server and also validates source server requirements",
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "resultType": {
           "description": "Type of result - database level or task level",
           "type": "string"
         }
       },
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ],
       "required": [ "resultType" ],
       "discriminator": "resultType"
     },
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToTargetSqlDbTask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToTargetSqlDbTask.json
index a6da8b38ef4a..2400aff74b50 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToTargetSqlDbTask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToTargetSqlDbTask.json
@@ -34,6 +34,11 @@
       "type": "object",
       "description": "Output for the task that validates connection to SQL DB and target server requirements",
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "databases": {
           "type": "string",
           "description": "Source databases as a map from database name to database id",
@@ -52,12 +57,7 @@
           "description": "Target server brand version",
           "readOnly": true
         }
-      },
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ]
+      }
     }
   }
 }
\ No newline at end of file
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToTargetSqlMITask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToTargetSqlMITask.json
index 578ddf9a8e05..53bff7157bd5 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToTargetSqlMITask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ConnectToTargetSqlMITask.json
@@ -34,6 +34,11 @@
       "type": "object",
       "description": "Output for the task that validates connection to Azure SQL Database Managed Instance.",
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "targetServerVersion": {
           "type": "string",
           "description": "Target server version",
@@ -52,12 +57,7 @@
           },
           "readOnly": true
         }
-      },
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ]
+      }
     }
   }
 }
\ No newline at end of file
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/GetUserTablesSqlTask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/GetUserTablesSqlTask.json
index bef3b25403ba..c57438e94485 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/GetUserTablesSqlTask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/GetUserTablesSqlTask.json
@@ -42,6 +42,11 @@
       "type": "object",
       "description": "Output of the task that collects user tables for the given list of databases",
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "databasesToTables": {
           "type": "string",
           "description": "Mapping from database name to list of tables",
@@ -61,12 +66,7 @@
           },
           "readOnly": true
         }
-      },
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ]
+      }
     },
     "DatabaseTable": {
       "type": "object",
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/MigrateSqlServerSqlDbTask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/MigrateSqlServerSqlDbTask.json
index 975df49e559a..4ad624a45f34 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/MigrateSqlServerSqlDbTask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/MigrateSqlServerSqlDbTask.json
@@ -46,16 +46,16 @@
       "type": "object",
       "description": "Output for the task that migrates on-prem SQL Server databases to Azure SQL Database",
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "resultType": {
           "description": "Result type",
           "type": "string"
         }
       },
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ],
       "required": [ "resultType" ],
       "discriminator": "resultType"
     },
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/MigrateSqlServerSqlMITask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/MigrateSqlServerSqlMITask.json
index 3c6040d13942..857f77a1be68 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/MigrateSqlServerSqlMITask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/MigrateSqlServerSqlMITask.json
@@ -51,16 +51,16 @@
       "type": "object",
       "description": "Output for task that migrates SQL Server databases to Azure SQL Database Managed Instance.",
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "resultType": {
           "description": "Result type",
           "type": "string"
         }
       },
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ],
       "required": [ "resultType" ],
       "discriminator": "resultType"
     },
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/TasksCommon.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/TasksCommon.json
index e0bd2898a9a2..365d94539564 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/TasksCommon.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/TasksCommon.json
@@ -17,17 +17,6 @@
   },
   "paths": {},
   "definitions": {
-    "TaskOutput": {
-      "type": "object",
-      "description": "Base class for all DMS task outputs",
-      "properties": {
-        "id": {
-          "type": "string",
-          "description": "Result identifier",
-          "readOnly": true
-        }
-      }
-    },
     "Database": {
       "type": "object",
       "description": "Information about a single database",
diff --git a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ValidateMigrationInputSqlServerSqlMITask.json b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ValidateMigrationInputSqlServerSqlMITask.json
index e5bdb8e2d857..dbc7112f1fdc 100644
--- a/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ValidateMigrationInputSqlServerSqlMITask.json
+++ b/specification/datamigration/resource-manager/Microsoft.DataMigration/preview/2018-03-15-preview/definitions/ValidateMigrationInputSqlServerSqlMITask.json
@@ -50,12 +50,12 @@
     "ValidateMigrationInputSqlServerSqlMITaskOutput": {
       "type": "object",
       "description": "Output for task that validates migration input for SQL to Azure SQL Managed Instance migrations",
-      "allOf": [
-        {
-          "$ref": "./TasksCommon.json#/definitions/TaskOutput"
-        }
-      ],
       "properties": {
+        "id": {
+          "type": "string",
+          "description": "Result identifier",
+          "readOnly": true
+        },
         "name": {
           "type": "string",
           "description": "Name of database",
@@ -85,7 +85,7 @@
           },
           "readOnly": true
         },
-        "backupStorageAccountErrors" : {
+        "backupStorageAccountErrors": {
           "description": "Errors associated with the storage account provided.",
           "type": "array",
           "items": {