diff --git a/lib/libshmem.c b/lib/libshmem.c
index 3af27f2..fad6a3b 100644
--- a/lib/libshmem.c
+++ b/lib/libshmem.c
@@ -118,7 +118,7 @@ SMT_Status  SM_Library_Open_I( int  Instance, const char  *Context, SMT_Flags  O
 
         /* Ouverture de la liste des heaps ouverts (locale) */
 
-        rc = ND_DataStruct_Open( &Opened_Heap_List, "SM Opened Heap", 1, &index_type, "SM_Opened_Heap_List_Manager", NULL, NULL, TRUE, NULL);
+        rc = ND_DataStruct_Open( &Opened_Heap_List, "SM Opened Heap", ND_OPEN_FLAG_CREATE, 1, &index_type, "SM_Opened_Heap_List_Manager", NULL, NULL, TRUE, NULL);
         if( rc != NDS_OK)
         {
             LG_LOG_ERROR_0( "SM_Library_Open : unable to create the local opened heap cache");
@@ -167,7 +167,7 @@ SMT_Status  SM_Library_Open_I( int  Instance, const char  *Context, SMT_Flags  O
 
             /* Ouverture de la liste des heaps ouverts (locale) */
 
-	    rc = ND_DataStruct_Open( &Opened_Heap_List, "SM Opened Heap", 1, &index_type, "SM_Opened_Heap_List_Manager", NULL, NULL, TRUE, NULL);
+	    rc = ND_DataStruct_Open( &Opened_Heap_List, "SM Opened Heap", ND_OPEN_FLAG_CREATE, 1, &index_type, "SM_Opened_Heap_List_Manager", NULL, NULL, TRUE, NULL);
             if( rc != NDS_OK)
             {
                 LG_LOG_ERROR_0( "Unable to create the local opened heap cache");
@@ -2532,7 +2532,7 @@ SMT_Status SM_Base_Init ( void )
 
 //    rc = ND_DataStruct_Open( &( SM_Base->MHR), 1, &index_type, "MHR_Manager", NULL, "SM_Base_Alloc", NULL, "SM_Base_Free", NULL, TRUE, NULL);
 
-    if( ( rc = ND_DataStruct_Open( &( SM_Base->MHR), "SHM-MHR", 1, &index_type, "MHR_Manager", NULL, SMG_DataStruct_Handlers, TRUE, NULL)) != NDS_OK)
+    if( ( rc = ND_DataStruct_Open( &( SM_Base->MHR), "SHM-MHR", ND_OPEN_FLAG_CREATE, 1, &index_type, "MHR_Manager", NULL, SMG_DataStruct_Handlers, TRUE, NULL)) != NDS_OK)
     {
         LG_LOG_ERROR_0( "Unable to create the MHR structure");
 
@@ -3456,7 +3456,7 @@ NDT_Status  MHR_Manager( NDT_Root  *Root_Ptr, NDT_Index_Id  Index_Id, NDT_Node
 
 //	    rc = ND_DataStruct_Open( &( ( *MHH_Ptr_Ptr)->DSR), 1, &index_type, "SM_DSR_Manager", NULL, SM_Base->MHR->Allocator_Name, NULL, SM_Base->MHR->Deallocator_Name, NULL, TRUE, NULL);
             
-	    if( ( rc = ND_DataStruct_Open( &( ( *MHH_Ptr_Ptr)->DSR), "SHM-DSR", 1, &index_type, "SM_DSR_Manager", NULL, SMG_DataStruct_Handlers, TRUE, NULL)) != NDS_OK)
+	    if( ( rc = ND_DataStruct_Open( &( ( *MHH_Ptr_Ptr)->DSR), "SHM-DSR", ND_OPEN_FLAG_CREATE, 1, &index_type, "SM_DSR_Manager", NULL, SMG_DataStruct_Handlers, TRUE, NULL)) != NDS_OK)
 	    {
 	        LG_LOG_ERROR_0( "Unable to create the DSR structure");
 		goto Error4;
@@ -3471,7 +3471,7 @@ NDT_Status  MHR_Manager( NDT_Root  *Root_Ptr, NDT_Index_Id  Index_Id, NDT_Node
 
 //	    rc = ND_DataStruct_Open( &( ( *MHH_Ptr_Ptr)->ACR), 1, &index_type, "SM_ACR_Manager", NULL, SM_Base->MHR->Allocator_Name, NULL, SM_Base->MHR->Deallocator_Name, NULL, TRUE, NULL);
 
-	    if( ( rc = ND_DataStruct_Open( &( ( *MHH_Ptr_Ptr)->ACR), "SHM-ACR", 1, &index_type, "SM_ACR_Manager", NULL, SMG_DataStruct_Handlers, TRUE, NULL)) != NDS_OK)
+	    if( ( rc = ND_DataStruct_Open( &( ( *MHH_Ptr_Ptr)->ACR), "SHM-ACR", ND_OPEN_FLAG_CREATE, 1, &index_type, "SM_ACR_Manager", NULL, SMG_DataStruct_Handlers, TRUE, NULL)) != NDS_OK)
 	    {
 	        LG_LOG_ERROR_0( "Unable to create the ACR structure");
 		goto Error5;
@@ -3487,7 +3487,7 @@ NDT_Status  MHR_Manager( NDT_Root  *Root_Ptr, NDT_Index_Id  Index_Id, NDT_Node
 
 //	    rc = ND_DataStruct_Open( &( ( *MHH_Ptr_Ptr)->FCR), 1, &index_type, "SM_FCR_Manager", NULL, SM_Base->MHR->Allocator_Name, NULL, SM_Base->MHR->Deallocator_Name, NULL, TRUE, NULL);
 
-	    if( ( rc = ND_DataStruct_Open( &( ( *MHH_Ptr_Ptr)->FCR), "SHM-FCR", 1, &index_type, "SM_FCR_Manager", NULL, SMG_DataStruct_Handlers, TRUE, NULL)) != NDS_OK)
+	    if( ( rc = ND_DataStruct_Open( &( ( *MHH_Ptr_Ptr)->FCR), "SHM-FCR", ND_OPEN_FLAG_CREATE, 1, &index_type, "SM_FCR_Manager", NULL, SMG_DataStruct_Handlers, TRUE, NULL)) != NDS_OK)
 	    {
 	        LG_LOG_ERROR_0( "Unable to create the FCR structure");
 		goto Error6;