diff --git a/services/preview/machinelearningservices/mgmt/2018-03-01-preview/machinelearningservices/models.go b/services/preview/machinelearningservices/mgmt/2018-03-01-preview/machinelearningservices/models.go
index a05fb91588fe..018b3666ab3d 100644
--- a/services/preview/machinelearningservices/mgmt/2018-03-01-preview/machinelearningservices/models.go
+++ b/services/preview/machinelearningservices/mgmt/2018-03-01-preview/machinelearningservices/models.go
@@ -524,7 +524,7 @@ type ComputeResource struct {
 	ID *string `json:"id,omitempty"`
 	// Name - READ-ONLY; Specifies the name of the resource.
 	Name *string `json:"name,omitempty"`
-	// Identity - READ-ONLY; The identity of the resource.
+	// Identity - The identity of the resource.
 	Identity *Identity `json:"identity,omitempty"`
 	// Location - Specifies the location of the resource.
 	Location *string `json:"location,omitempty"`
@@ -538,6 +538,9 @@ type ComputeResource struct {
 func (cr ComputeResource) MarshalJSON() ([]byte, error) {
 	objectMap := make(map[string]interface{})
 	objectMap["properties"] = cr.Properties
+	if cr.Identity != nil {
+		objectMap["identity"] = cr.Identity
+	}
 	if cr.Location != nil {
 		objectMap["location"] = cr.Location
 	}
@@ -1207,7 +1210,7 @@ type Resource struct {
 	ID *string `json:"id,omitempty"`
 	// Name - READ-ONLY; Specifies the name of the resource.
 	Name *string `json:"name,omitempty"`
-	// Identity - READ-ONLY; The identity of the resource.
+	// Identity - The identity of the resource.
 	Identity *Identity `json:"identity,omitempty"`
 	// Location - Specifies the location of the resource.
 	Location *string `json:"location,omitempty"`
@@ -1220,6 +1223,9 @@ type Resource struct {
 // MarshalJSON is the custom marshaler for Resource.
 func (r Resource) MarshalJSON() ([]byte, error) {
 	objectMap := make(map[string]interface{})
+	if r.Identity != nil {
+		objectMap["identity"] = r.Identity
+	}
 	if r.Location != nil {
 		objectMap["location"] = r.Location
 	}
@@ -1421,7 +1427,7 @@ type Workspace struct {
 	ID *string `json:"id,omitempty"`
 	// Name - READ-ONLY; Specifies the name of the resource.
 	Name *string `json:"name,omitempty"`
-	// Identity - READ-ONLY; The identity of the resource.
+	// Identity - The identity of the resource.
 	Identity *Identity `json:"identity,omitempty"`
 	// Location - Specifies the location of the resource.
 	Location *string `json:"location,omitempty"`
@@ -1437,6 +1443,9 @@ func (w Workspace) MarshalJSON() ([]byte, error) {
 	if w.WorkspaceProperties != nil {
 		objectMap["properties"] = w.WorkspaceProperties
 	}
+	if w.Identity != nil {
+		objectMap["identity"] = w.Identity
+	}
 	if w.Location != nil {
 		objectMap["location"] = w.Location
 	}