diff --git a/adaptation_layer/driver/osm.py b/adaptation_layer/driver/osm.py
index 8c92fdb..53a79e4 100644
--- a/adaptation_layer/driver/osm.py
+++ b/adaptation_layer/driver/osm.py
@@ -283,20 +283,15 @@ def instantiate_ns(self, nsId: str, args=None) -> Tuple[None, Headers]:
         args_payload = args['payload']
 
         if args_payload and 'additionalParamsForNs' in args_payload:
-            additional_params = args_payload['additionalParamsForNs']
-            if 'vnf' in additional_params:
+            instantiate_payload.update(args_payload['additionalParamsForNs'])
+            if 'vnf' in instantiate_payload:
                 mapping = {v: str(i+1) for i,
                            v in enumerate(ns_res['constituent-vnfr-ref'])}
-
-                for vnf in additional_params['vnf']:
+                for vnf in instantiate_payload['vnf']:
                     if vnf.get('vnfInstanceId'):
                         vnf['member-vnf-index'] = mapping[vnf.pop(
                             'vnfInstanceId')]
-                if len(additional_params['vnf']) > 0:
-                    instantiate_payload['vnf'] = additional_params['vnf']
-            if 'wim_account' in additional_params:
-                instantiate_payload['wimAccountId'] = additional_params['wim_account']
-            else:
+            if 'wim_account' not in instantiate_payload:
                 instantiate_payload['wimAccountId'] = False
 
         try:
diff --git a/openapi/MSO-LO-swagger-resolved.yaml b/openapi/MSO-LO-swagger-resolved.yaml
index bb9c682..5536491 100644
--- a/openapi/MSO-LO-swagger-resolved.yaml
+++ b/openapi/MSO-LO-swagger-resolved.yaml
@@ -1191,9 +1191,23 @@ definitions:
         type: string
       vimAccountId:
         type: string
+  NfvoNsInstantiateRequest_additionalParamsForNs_vld:
+    items:
+      type: object
+      properties:
+        name:
+          type: string
+          example: vldnet
+        vim-network-name:
+          type: string
+          example: netVIM1
   NfvoNsInstantiateRequest_additionalParamsForNs:
     type: object
     properties:
+      vld:
+        type: array
+        items:
+          $ref: '#/definitions/NfvoNsInstantiateRequest_additionalParamsForNs_vld'
       vnf:
         type: array
         items: