diff --git a/database_utils/migrate_mano_db.sh b/database_utils/migrate_mano_db.sh
index 86a3b77..c6983ca 100755
--- a/database_utils/migrate_mano_db.sh
+++ b/database_utils/migrate_mano_db.sh
@@ -164,6 +164,7 @@
 [ $OPENMANO_VER_NUM -ge 4032 ] && DATABASE_TARGET_VER_NUM=8   #0.4.32=>  8
 [ $OPENMANO_VER_NUM -ge 4033 ] && DATABASE_TARGET_VER_NUM=9   #0.4.33=>  9
 [ $OPENMANO_VER_NUM -ge 4036 ] && DATABASE_TARGET_VER_NUM=10  #0.4.36=>  10
+[ $OPENMANO_VER_NUM -ge 4043 ] && DATABASE_TARGET_VER_NUM=11  #0.4.43=>  11
 #TODO ... put next versions here
 
 
@@ -542,6 +543,21 @@
     echo "DELETE FROM schema_version WHERE version_int='10';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
 }
 
+function upgrade_to_11(){
+    echo "    upgrade database from version 0.10 to version 0.11"
+    echo "      remove unique name at 'scenarios', 'instance_scenarios'"
+    echo "ALTER TABLE scenarios DROP INDEX name;"  | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+    echo "ALTER TABLE instance_scenarios DROP INDEX name;"  | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+    echo "INSERT INTO schema_version (version_int, version, openmano_ver, comments, date) VALUES (11, '0.11', '0.4.43', 'remove unique name at scenarios,instance_scenarios', '2016-07-18');" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+}
+function downgrade_from_11(){
+    echo "    downgrade database from version 0.11 to version 0.10"
+    echo "      add unique name at 'scenarios', 'instance_scenarios'"
+    echo "ALTER TABLE scenarios ADD UNIQUE INDEX name (name);"  | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+    echo "ALTER TABLE instance_scenarios ADD UNIQUE INDEX name (name);"  | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+    echo "DELETE FROM schema_version WHERE version_int='11';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+}
+
 function upgrade_to_X(){
     echo "      change 'datacenter_nets'"
     echo "ALTER TABLE datacenter_nets ADD COLUMN vim_tenant_id VARCHAR(36) NOT NULL AFTER datacenter_id, DROP INDEX name_datacenter_id, ADD UNIQUE INDEX name_datacenter_id (name, datacenter_id, vim_tenant_id);" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
diff --git a/nfvo.py b/nfvo.py
index 13d5c9e..9c6dace 100644
--- a/nfvo.py
+++ b/nfvo.py
@@ -768,19 +768,24 @@
 
 #1.2: Check that VNF are present at database table vnfs. Insert uuid, description and external interfaces
     for name,vnf in vnfs.items():
-        WHERE_={}
+        where={}
+        where_or={"tenant_id": tenant_id, 'public': "true"}
         error_text = ""
         error_pos = "'topology':'nodes':'" + name + "'"
         if 'vnf_id' in vnf:
             error_text += " 'vnf_id' " +  vnf['vnf_id']
-            WHERE_['uuid'] = vnf['vnf_id']
+            where['uuid'] = vnf['vnf_id']
         if 'VNF model' in vnf:
             error_text += " 'VNF model' " +  vnf['VNF model']
-            WHERE_['name'] = vnf['VNF model']
-        if len(WHERE_) == 0:
+            where['name'] = vnf['VNF model']
+        if len(where) == 0:
             raise NfvoException("Descriptor need a 'vnf_id' or 'VNF model' field at " + error_pos, HTTP_Bad_Request)
         
-        vnf_db = mydb.get_rows(SELECT=('uuid','name','description'), FROM='vnfs', WHERE=WHERE_)
+        vnf_db = mydb.get_rows(SELECT=('uuid','name','description'),
+                               FROM='vnfs',
+                               WHERE=where, 
+                               WHERE_OR=where_or,
+                               WHERE_AND_OR="AND")
         if len(vnf_db)==0:
             raise NfvoException("unknown" + error_text + " at " + error_pos, HTTP_Not_Found)
         elif len(vnf_db)>1:
@@ -1024,18 +1029,23 @@
 
 #1: Check that VNF are present at database table vnfs and update content into scenario dict
     for name,vnf in scenario["vnfs"].iteritems():
-        WHERE_={}
+        where={}
+        where_or={"tenant_id": tenant_id, 'public': "true"}
         error_text = ""
         error_pos = "'topology':'nodes':'" + name + "'"
         if 'vnf_id' in vnf:
             error_text += " 'vnf_id' " +  vnf['vnf_id']
-            WHERE_['uuid'] = vnf['vnf_id']
+            where['uuid'] = vnf['vnf_id']
         if 'vnf_name' in vnf:
             error_text += " 'vnf_name' " +  vnf['vnf_name']
-            WHERE_['name'] = vnf['vnf_name']
-        if len(WHERE_) == 0:
+            where['name'] = vnf['vnf_name']
+        if len(where) == 0:
             raise NfvoException("Needed a 'vnf_id' or 'VNF model' at " + error_pos, HTTP_Bad_Request)
-        vnf_db = mydb.get_rows(SELECT=('uuid','name','description'), FROM='vnfs', WHERE=WHERE_)
+        vnf_db = mydb.get_rows(SELECT=('uuid','name','description'),
+                               FROM='vnfs',
+                               WHERE=where,
+                               WHERE_OR=where_or,
+                               WHERE_AND_OR="AND")
         if len(vnf_db)==0:
             raise NfvoException("Unknown" + error_text + " at " + error_pos, HTTP_Not_Found)
         elif len(vnf_db)>1:
diff --git a/openmanod.py b/openmanod.py
index dbfd505..f2cfb7e 100755
--- a/openmanod.py
+++ b/openmanod.py
@@ -33,9 +33,9 @@
 '''
 __author__="Alfonso Tierno, Gerardo Garcia, Pablo Montes"
 __date__ ="$26-aug-2014 11:09:29$"
-__version__="0.4.42-r479"
+__version__="0.4.43-r480"
 version_date="Jul 2016"
-database_version="0.10"      #expected database schema version
+database_version="0.11"      #expected database schema version
 
 import httpserver
 import time