diff --git a/Mp1.json b/Mp1.json
index 97aed2f5439e8e079add3db5d7b5660da99f29f8..53523b00d30f59325a96e8bc4e21bfb9264baeef 100644
--- a/Mp1.json
+++ b/Mp1.json
@@ -324,7 +324,7 @@
           }
         },
         "requestBody": {
-          "$ref": "#/components/requestBodies/Services"
+          "$ref": "#/components/requestBodies/Services.Post"
         }
       }
     },
@@ -1035,6 +1035,7 @@
       "ServiceInfo.TransportId": {
         "description": "Identifier of the platform-provided transport to be used by the service. Valid identifiers may be obtained using the \"Transport information query\" procedure. May be present in POST requests to signal the use of a platform-provided transport for the service, and shall be absent otherwise.",
         "type": "string",
+        "writeOnly": true,
         "example": "Rest1"
       },
       "ServiceInfo.Version": {
@@ -1042,7 +1043,7 @@
         "type": "string",
         "example": "ServiceVersion1"
       },
-      "ServiceInfo": {
+      "ServiceInfo.Post": {
         "description": "This type represents the general information of a mobile edge service.",
         "type": "object",
         "required": [
@@ -1051,6 +1052,18 @@
           "state",
           "serializer"
         ],
+        "oneOf": [
+          {
+            "required": [
+              "transportId"
+            ]
+          },
+          {
+            "required": [
+              "transportInfo"
+            ]
+          }
+        ],
         "properties": {
           "serInstanceId": {
             "$ref": "#/components/schemas/ServiceInfo.SerInstanceId"
@@ -1078,6 +1091,40 @@
           }
         }
       },
+      "ServiceInfo": {
+        "description": "This type represents the general information of a mobile edge service.",
+        "type": "object",
+        "required": [
+          "serName",
+          "version",
+          "state",
+          "transportInfo",
+          "serializer"
+        ],
+        "properties": {
+          "serInstanceId": {
+            "$ref": "#/components/schemas/ServiceInfo.SerInstanceId"
+          },
+          "serName": {
+            "$ref": "#/components/schemas/ServiceInfo.SerName"
+          },
+          "serCategory": {
+            "$ref": "#/components/schemas/CategoryRef"
+          },
+          "version": {
+            "$ref": "#/components/schemas/ServiceInfo.Version"
+          },
+          "state": {
+            "$ref": "#/components/schemas/ServiceInfo.State"
+          },
+          "transportInfo": {
+            "$ref": "#/components/schemas/TransportInfo"
+          },
+          "serializer": {
+            "$ref": "#/components/schemas/SerializerTypes"
+          }
+        }
+      },
       "Subscription": {
         "description": "A link to the related subscription",
         "type": "object",
@@ -1957,6 +2004,11 @@
               }
             }
           }
+        },
+        "links": {
+          "getTransportInfo": {
+            "$ref": "#/components/links/GetTransportInfo"
+          }
         }
       },
       "Error.400": {
@@ -2067,6 +2119,17 @@
         "description": "New ServiceInfo with updated \"state\" is included as entity body of the request",
         "required": true
       },
+      "Services.Post": {
+        "content": {
+          "application/json": {
+            "schema": {
+              "$ref": "#/components/schemas/ServiceInfo.Post"
+            }
+          }
+        },
+        "description": "New ServiceInfo with updated \"state\" is included as entity body of the request",
+        "required": true
+      },
       "ServicesServiceId": {
         "content": {
           "application/json": {
@@ -2172,6 +2235,13 @@
           "trafficRuleId": "$response.body#/trafficRuleId"
         }
       },
+      "GetTransportInfo": {
+        "operationId": "AppServices_POST",
+        "description": "The `id` value returned in the response can be used as the `transportId` parameter in `POST /applications/{appInstanceId}/services`. The first transport is provided as the link as wildcards are not supported",
+        "parameters": {
+          "transportId": "$response.body#/0/id"
+        }
+      },
       "GetIndividualMeMp1Subscription": {
         "operationId": "ApplicationsSubscription_GET",
         "description": "The `subscriptionId` value returned in the response can be used as the `subscriptionId` parameter in `GET /applications/{appInstanceId}/subscriptions/{subscriptionType}/{subscriptionId}`",
@@ -2240,7 +2310,6 @@
           },
           "version": "ServiceVersion1",
           "state": "ACTIVE",
-          "transportId": "Rest1",
           "transportInfo": {
             "id": "TransId12345",
             "name": "REST",
@@ -2276,7 +2345,6 @@
             },
             "version": "ServiceVersion1",
             "state": "ACTIVE",
-            "transportId": "Rest1",
             "transportInfo": {
               "id": "TransId12345",
               "name": "REST",
diff --git a/Mp1.yaml b/Mp1.yaml
index 9ecfee173eff7cccc5b7977b4b34610f1f3fe03f..0d346f6f21179214951b2e094021096ec71c6a26 100644
--- a/Mp1.yaml
+++ b/Mp1.yaml
@@ -227,7 +227,7 @@ paths:
         '404':
           $ref: '#/components/responses/Error.404'
       requestBody:
-        $ref: '#/components/requestBodies/Services'
+        $ref: '#/components/requestBodies/Services.Post'
   '/services/{serviceId}':
     parameters:
       - $ref: '#/components/parameters/Path.ServiceId'
@@ -776,7 +776,7 @@ components:
         - JSON
         - XML
         - PROTOBUF3
-      example: JSON
+      example: 'JSON'
     ServiceInfo.SerInstanceId:
       description: >-
         Identifier of the service instance assigned by the MEPM / mobile edge
@@ -805,12 +805,13 @@ components:
         platform-provided transport for the service, and shall be absent
         otherwise.
       type: string
+      writeOnly: true
       example: 'Rest1'
     ServiceInfo.Version:
       description: Service version
       type: string
       example: 'ServiceVersion1'
-    ServiceInfo:
+    ServiceInfo.Post:
       description: This type represents the general information of a mobile edge service.
       type: object
       required:
@@ -818,6 +819,9 @@ components:
         - version
         - state
         - serializer
+      oneOf:
+        - required: [transportId]
+        - required: [transportInfo]
       properties:
         serInstanceId:
           $ref: '#/components/schemas/ServiceInfo.SerInstanceId'
@@ -835,6 +839,30 @@ components:
           $ref: '#/components/schemas/TransportInfo'
         serializer:
           $ref: '#/components/schemas/SerializerTypes'
+    ServiceInfo:
+      description: This type represents the general information of a mobile edge service.
+      type: object
+      required:
+        - serName
+        - version
+        - state
+        - transportInfo
+        - serializer
+      properties:
+        serInstanceId:
+          $ref: '#/components/schemas/ServiceInfo.SerInstanceId'
+        serName:
+          $ref: '#/components/schemas/ServiceInfo.SerName'
+        serCategory:
+          $ref: '#/components/schemas/CategoryRef'
+        version:
+          $ref: '#/components/schemas/ServiceInfo.Version'
+        state:
+          $ref: '#/components/schemas/ServiceInfo.State'
+        transportInfo:
+          $ref: '#/components/schemas/TransportInfo'
+        serializer:
+          $ref: '#/components/schemas/SerializerTypes'
     Subscription:
       description: A link to the related subscription
       type: object
@@ -1527,6 +1555,9 @@ components:
             minItems: 0
             items:
               $ref: '#/components/schemas/TransportInfo'
+      links:
+        getTransportInfo:
+          $ref: '#/components/links/GetTransportInfo'
     Error.400:
       description: Bad Request
       content:
@@ -1595,6 +1626,15 @@ components:
         New ServiceInfo with updated "state" is included as entity body of the
         request
       required: true
+    Services.Post:
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/ServiceInfo.Post'
+      description: >-
+        New ServiceInfo with updated "state" is included as entity body of the
+        request
+      required: true
     ServicesServiceId:
       content:
         application/json:
@@ -1664,6 +1704,11 @@ components:
       description: The `trafficRuleId` value returned in the response can be used as the `trafficRuleId` parameter in `PUT /applications/{appInstanceId}/traffic_rules/{trafficRuleId}`
       parameters:
         trafficRuleId: '$response.body#/trafficRuleId'
+    GetTransportInfo:
+      operationId: AppServices_POST
+      description: The `id` value returned in the response can be used as the `transportId` parameter in `POST /applications/{appInstanceId}/services`. The first transport is provided as the link as wildcards are not supported
+      parameters:
+        transportId: '$response.body#/0/id'
     GetIndividualMeMp1Subscription:
       operationId: ApplicationsSubscription_GET
       description: The `subscriptionId` value returned in the response can be used as the `subscriptionId` parameter in `GET /applications/{appInstanceId}/subscriptions/{subscriptionType}/{subscriptionId}`
@@ -1716,7 +1761,6 @@ components:
           version: 'version1'
         version: 'ServiceVersion1'
         state: 'ACTIVE'
-        transportId: 'Rest1'
         transportInfo:
           id: 'TransId12345'
           name: 'REST'
@@ -1743,7 +1787,6 @@ components:
             version: 'version1'
           version: 'ServiceVersion1'
           state: 'ACTIVE'
-          transportId: 'Rest1'
           transportInfo:
             id: 'TransId12345'
             name: 'REST'