diff --git a/src/models/NSInstanceModel.ts b/src/models/NSInstanceModel.ts
index 5039cc5..ffa95a2 100644
--- a/src/models/NSInstanceModel.ts
+++ b/src/models/NSInstanceModel.ts
@@ -388,3 +388,18 @@
     vnfdId: string;
     memberIndex: string;
 }
+
+/** Interface for vdu mappings */
+export interface VDUMAP {
+    vdu_mappings?: VDUMAPPINGS[];
+}
+
+/** Interface for vdu Mappings */
+export interface VDUMAPPINGS {
+    vduId?: string;
+    'vdu-id'?: string;
+    countIndex?: string;
+    'count-index'?: string;
+    runDay1?: Boolean;
+    'run-day1'?: Boolean;
+}