diff --git a/npm/ng-packs/packages/schematics/src/models/api-definition.ts b/npm/ng-packs/packages/schematics/src/models/api-definition.ts
index f6c4e2d509..437606ef73 100644
--- a/npm/ng-packs/packages/schematics/src/models/api-definition.ts
+++ b/npm/ng-packs/packages/schematics/src/models/api-definition.ts
@@ -40,11 +40,11 @@ export interface Controller {
 export interface InterfaceDef {
   type: string;
   name: string;
-  methods: InterfaceMethodDef[];
+  methods?: InterfaceMethodDef[];
 }
 export interface InterfaceMethodDef {
   name: string;
-  parametersOnMethod: InterfaceParameterOnMethodDef[];
+  parametersOnMethod?: InterfaceParameterOnMethodDef[];
   returnValue: {
     type: string;
     typeSimple: string;
diff --git a/npm/ng-packs/packages/schematics/src/utils/common.ts b/npm/ng-packs/packages/schematics/src/utils/common.ts
index 1328736ffe..77595e7bf4 100644
--- a/npm/ng-packs/packages/schematics/src/utils/common.ts
+++ b/npm/ng-packs/packages/schematics/src/utils/common.ts
@@ -41,12 +41,12 @@ const sanitizeTypeName = (name: string) => name.replace(sanitizeTypeNameRegExp,
 export function sanitizeControllerTypeNames(
   controllers: Record<string, Controller>,
 ): Record<string, Controller> {
-  Object.values(controllers).forEach(controller => {
-    controller.interfaces.forEach(i => {
-      i.methods.forEach(m => {
+  Object.values(controllers || {}).forEach(controller => {
+    controller.interfaces?.forEach(i => {
+      i.methods?.forEach(m => {
         m.returnValue.type = sanitizeTypeName(m.returnValue.type);
         m.returnValue.typeSimple = sanitizeTypeName(m.returnValue.typeSimple);
-        m.parametersOnMethod.forEach(p => {
+        m.parametersOnMethod?.forEach(p => {
           p.type = sanitizeTypeName(p.type);
           p.typeAsString = sanitizeTypeName(p.typeAsString);
           p.typeSimple = sanitizeTypeName(p.typeSimple);
@@ -54,15 +54,15 @@ export function sanitizeControllerTypeNames(
       });
     });
 
-    Object.values(controller.actions).forEach(a => {
+    Object.values(controller.actions || {}).forEach(a => {
       a.returnValue.type = sanitizeTypeName(a.returnValue.type);
       a.returnValue.typeSimple = sanitizeTypeName(a.returnValue.typeSimple);
-      a.parametersOnMethod.forEach(p => {
+      a.parametersOnMethod?.forEach(p => {
         p.type = sanitizeTypeName(p.type);
         p.typeAsString = sanitizeTypeName(p.typeAsString);
         p.typeSimple = sanitizeTypeName(p.typeSimple);
       });
-      a.parameters.forEach(p => {
+      a.parameters?.forEach(p => {
         p.type = sanitizeTypeName(p.type);
         p.typeSimple = sanitizeTypeName(p.typeSimple);
       });