Fixes nullable properties issue (#40200)

Author: LaylaLiu-gmail

specification/app/resource-manager/Microsoft.App/SreAgent/agent.models.tsp

@@ -15,7 +15,42 @@ model AgentPatch {
   ...ManagedServiceIdentityProperty;
 
   /** Agent specific properties */
-  properties?: AgentProperties;
+  properties?: AgentPatchProperties;
+}
+
+/**
+ * Agent specific properties for PATCH requests.
+ *
+ * PATCH request bodies must not include required properties and should not include read-only properties.
+ */
+model AgentPatchProperties {
+  /** The agent space ID referenced by the agent */
+  agentSpaceId?: armResourceIdentifier<[
+    {
+      type: "Microsoft.App/agentSpaces";
+    }
+  ]>;
+
+  /** Knowledge graph configuration for agent */
+  knowledgeGraphConfiguration?: KnowledgeGraphConfiguration;
+
+  /** Configuration for action */
+  actionConfiguration?: ActionConfiguration;
+
+  /** Log configurations */
+  logConfiguration?: LogConfiguration;
+
+  /** Incident management configurations */
+  incidentManagementConfiguration?: IncidentManagementConfiguration;
+
+  /** The upgrade channel of the agent */
+  upgradeChannel?: UpgradeChannel;
+
+  /** Agent identity configuration for accessing resources */
+  agentIdentity?: AgentIdentityPatch;
+
+  /** Default AI model configuration for the agent */
+  defaultModel?: DefaultModel;
 }
 
 /** Properties of the Agent */
@@ -120,6 +155,12 @@ model AgentIdentity {
   clientId?: string;
 
   /** Initial sponsor group ID (required for agent identity) */
+  initialSponsorGroupId: string;
+}
+
+/** Agent identity configuration for PATCH requests */
+model AgentIdentityPatch {
+  /** Initial sponsor group ID (required for PUT but optional for PATCH) */
   initialSponsorGroupId?: string;
 }
 

specification/app/resource-manager/Microsoft.App/SreAgent/agentspace.models.tsp

@@ -15,7 +15,26 @@ model AgentSpacePatch {
   ...ManagedServiceIdentityProperty;
 
   /** Agent Space specific properties */
-  properties?: AgentSpaceProperties;
+  properties?: AgentSpacePatchProperties;
+}
+
+/**
+ * Agent Space specific properties for PATCH requests.
+ *
+ * PATCH request bodies must not include required properties and should not include read-only properties.
+ */
+model AgentSpacePatchProperties {
+  /** Description of the Agent Space */
+  description?: string;
+
+  /** Policy configurations for the Agent Space */
+  policies?: AgentSpacePoliciesPatch;
+
+  /** Maximum number of agents allowed in the Agent Space */
+  maxAgentCount?: int32;
+
+  /** Universal unique ID (UUID) of the Service Tree associated with this Agent Space */
+  serviceTreeId?: string;
 }
 
 /** Agent Space specific properties */
@@ -78,12 +97,15 @@ union AgentSpaceProvisioningState {
 /** Compliance status of the Agent Space */
 model AgentSpaceComplianceStatus {
   /** Indicates whether the Agent Space is compliant */
-  isCompliant?: boolean;
+  @visibility(Lifecycle.Read)
+  isCompliant: boolean;
 
   /** List of compliance issues found in the Agent Space */
+  @visibility(Lifecycle.Read)
   complianceIssues?: string[];
 
   /** Timestamp of the last compliance check */
+  @visibility(Lifecycle.Read)
   lastComplianceCheck?: utcDateTime;
 }
 
@@ -93,6 +115,12 @@ model AgentSpacePolicies {
   genevaActionsConfiguration?: GenevaActionsPolicy;
 }
 
+/** Policy configurations for an Agent Space (PATCH request model) */
+model AgentSpacePoliciesPatch {
+  /** Configuration for Geneva Actions policy */
+  genevaActionsConfiguration?: GenevaActionsPolicyPatch;
+}
+
 /** Geneva Actions policy configuration for Agent Space */
 model GenevaActionsPolicy {
   /** ACIS (Azure Container Instance Service) endpoint URL */
@@ -108,16 +136,39 @@ model GenevaActionsPolicy {
   authenticationMode?: GenevaActionAuthenticationMode;
 
   /** Name of the Geneva extension */
-  extensionName?: string;
+  extensionName: string;
 
   /** Collection of allowed Geneva actions */
   @identifiers(#["actionName", "extension"])
   allowedActions?: GenevaActionConfig[];
 
   /** Subject alternative name of the certificate used for authentication */
+  @visibility(Lifecycle.Read)
   certificateSubjectAlternativeName?: string;
 }
 
+/** Geneva Actions policy configuration for Agent Space (PATCH request model) */
+model GenevaActionsPolicyPatch {
+  /** ACIS (Azure Container Instance Service) endpoint URL */
+  acisEndpoint?: string;
+
+  /** Client ID for authentication */
+  clientId?: string;
+
+  /** Subject name of the certificate used for authentication */
+  certificateSubjectName?: string;
+
+  /** Authentication mode for Geneva Actions */
+  authenticationMode?: GenevaActionAuthenticationMode;
+
+  /** Name of the Geneva extension */
+  extensionName?: string;
+
+  /** Collection of allowed Geneva actions */
+  @identifiers(#["actionName", "extension"])
+  allowedActions?: GenevaActionConfig[];
+}
+
 /** Geneva Action authentication mode */
 union GenevaActionAuthenticationMode {
   string,

specification/app/resource-manager/Microsoft.App/SreAgent/examples/2026-01-01/AgentSpaces_ListByResourceGroup.json

@@ -44,6 +44,7 @@
               "policies": {
                 "genevaActionsConfiguration": {
                   "acisEndpoint": "https://acis.eastus.monitoring.azure.com",
+                  "extensionName": "GenevaActions",
                   "allowedActions": [
                     {
                       "actionName": "RestartService",

specification/app/resource-manager/Microsoft.App/SreAgent/examples/2026-01-01/AgentSpaces_ListBySubscription.json

@@ -43,6 +43,7 @@
               "policies": {
                 "genevaActionsConfiguration": {
                   "acisEndpoint": "https://acis.eastus.monitoring.azure.com",
+                  "extensionName": "GenevaActions",
                   "allowedActions": [
                     {
                       "actionName": "RestartService",
@@ -114,6 +115,7 @@
               "policies": {
                 "genevaActionsConfiguration": {
                   "acisEndpoint": "https://acis.westus2.monitoring.azure.com",
+                  "extensionName": "GenevaActions",
                   "allowedActions": [
                     {
                       "actionName": "GetMetrics",

specification/app/resource-manager/Microsoft.App/SreAgent/stable/2026-01-01/examples/AgentSpaces_ListByResourceGroup.json

@@ -44,6 +44,7 @@
               "policies": {
                 "genevaActionsConfiguration": {
                   "acisEndpoint": "https://acis.eastus.monitoring.azure.com",
+                  "extensionName": "GenevaActions",
                   "allowedActions": [
                     {
                       "actionName": "RestartService",

specification/app/resource-manager/Microsoft.App/SreAgent/stable/2026-01-01/examples/AgentSpaces_ListBySubscription.json

@@ -43,6 +43,7 @@
               "policies": {
                 "genevaActionsConfiguration": {
                   "acisEndpoint": "https://acis.eastus.monitoring.azure.com",
+                  "extensionName": "GenevaActions",
                   "allowedActions": [
                     {
                       "actionName": "RestartService",
@@ -114,6 +115,7 @@
               "policies": {
                 "genevaActionsConfiguration": {
                   "acisEndpoint": "https://acis.westus2.monitoring.azure.com",
+                  "extensionName": "GenevaActions",
                   "allowedActions": [
                     {
                       "actionName": "GetMetrics",