diff --git a/otcclient/plugins/ecs/ecs.py b/otcclient/plugins/ecs/ecs.py
index 0d798be..c9c5733 100644
--- a/otcclient/plugins/ecs/ecs.py
+++ b/otcclient/plugins/ecs/ecs.py
@@ -150,6 +150,11 @@ def describe_security_groups():
             if (not (OtcConfig.SECUGROUPNAME is None)):
                 ecs.convertSECUGROUPNameToId() 
                 
+            if OtcConfig.SECUGROUP is None:       
+                print("Security groups definition isn't correct! Check Security groups:")
+                print("otc ecs describe-security-groups")
+                os._exit(1)
+                
             url = "https://" + OtcConfig.DEFAULT_HOST+ "/v2.0/security-group-rules?security_group_id=" + OtcConfig.SECUGROUP        
             ret = utils_http.get(url)                     
             ecs.otcOutputHandler().print_output(ret, mainkey= "security_group_rules", listkey={"id","direction", "protocol","port_range_min","port_range_max" })
@@ -582,15 +587,21 @@ def create_subnet():
              args = [ 
                     arg(    '--subnet-name',    dest='SUBNETNAME',     help='Name of the subnet reference will use during VM creation'),
                     arg(    '--subnet-id',    dest='SUBNETID',     help='Id of the subnet will use during VM creation'),
-
+                    arg('--vpc-name',dest='VPCNAME',     help='Name of the VPC reference will use during VM creation'),
+                    arg(      '--vpc-id',    dest='VPCID',     help='Id of the VPC will use during VM creation')
                 ]
                 )
     def delete_subnet():
+        if not (OtcConfig.VPCNAME is None):
+            ecs.convertVPCNameToId()
         if OtcConfig.SUBNETNAME:
             ecs.convertSUBNETNameToId()
         
-        url = "https://" + OtcConfig.DEFAULT_HOST+ "/v1/" + OtcConfig.PROJECT_ID + "/subnets" + OtcConfig.SUBNETID
+        url = "https://" + OtcConfig.DEFAULT_HOST+ "/v1/" + OtcConfig.PROJECT_ID + "/vpcs/" + OtcConfig.VPCID + "/subnets/" + OtcConfig.SUBNETID
         ret = utils_http.delete(url)
+        if OtcConfig.DEBUG:
+            print(url)
+            print(ret)           
         return ret
 
 
@@ -665,9 +676,11 @@ def delete_security_group():
 
         if not (OtcConfig.SECUGROUPNAME is None):
             ecs.convertSECUGROUPNameToId()
-        
-        url = "https://" + OtcConfig.DEFAULT_HOST+ "/v2.0/security-groups" + "/"+ OtcConfig.SECUGROUP
+        url = "https://" + OtcConfig.DEFAULT_HOST+ "/v2.0" + "/security-groups" + "/"+ OtcConfig.SECUGROUP
         ret = utils_http.delete(url)
+        if OtcConfig.DEBUG:
+            print(url)
+            print(ret)        
         return ret
 
 
@@ -958,6 +971,7 @@ def convertVOLUMENameToId():
 
     @staticmethod
     def convertSUBNETNameToId():
+            
         url = "https://" + OtcConfig.DEFAULT_HOST+ "/v1/" + OtcConfig.PROJECT_ID + "/subnets"
         ar = []
         
@@ -975,7 +989,9 @@ def convertSUBNETNameToId():
                     if len(ret) > 0:
                         ret = ret + ","
                     ret = ret + subnet["id"]
-        OtcConfig.SUBNETID = ret        
+
+        OtcConfig.SUBNETID = ret    
+       
 
     @staticmethod
     def convertIMAGENameToId():
@@ -1004,6 +1020,9 @@ def convertINSTANCENameToId():
         
     @staticmethod
     def convertSECUGROUPNameToId():
+        if OtcConfig.DEBUG:
+            print "convertSECUGROUPNameToId"
+            
         url = "https://" + OtcConfig.DEFAULT_HOST+ "/v1/" + OtcConfig.PROJECT_ID + "/security-groups"
         JSON = utils_http.get(url)
         parsed  = json.loads(JSON)
@@ -1013,11 +1032,41 @@ def convertSECUGROUPNameToId():
             ecs.convertVPCNameToId()
                 
         for security_group in security_groups:
-            if security_group.get("name") == OtcConfig.SECUGROUPNAME and ( security_group.get("vpc_id") == OtcConfig.VPCID or OtcConfig.VPCID is None ) :
+            if security_group.get("name") == OtcConfig.SECUGROUPNAME and OtcConfig.SECUGROUP is None:
+                OtcConfig.SECUGROUP = security_group["id"]
+                if OtcConfig.DEBUG:
+                    print "SECUGROUPNAME"
+                    print OtcConfig.SECUGROUP
+                    print OtcConfig.SOURCE_GROUP_ID
+                    print OtcConfig.VPCID   
+            if security_group.get("name") == OtcConfig.SECUGROUPNAME and ( security_group.get("vpc_id") == OtcConfig.VPCID) :
                 OtcConfig.SECUGROUP = security_group["id"]
-            if security_group.get("name") == OtcConfig.SOURCE_GROUP and ( security_group.get("vpc_id") == OtcConfig.VPCID or OtcConfig.VPCID is None ) :
+                if OtcConfig.DEBUG:
+                    print "SECUGROUPNAME + VPC"
+                    print OtcConfig.SECUGROUP
+                    print OtcConfig.SOURCE_GROUP_ID
+                    print OtcConfig.VPCID                   
+            if security_group.get("name") == OtcConfig.SOURCE_GROUP and OtcConfig.SOURCE_GROUP is None :
                 OtcConfig.SOURCE_GROUP_ID = security_group["id"]
+                if OtcConfig.DEBUG:
+                    print "SOURCE_GROUP"
+                    print OtcConfig.SECUGROUP
+                    print OtcConfig.SOURCE_GROUP_ID
+                    print OtcConfig.VPCID                   
+            if security_group.get("name") == OtcConfig.SOURCE_GROUP and ( security_group.get("vpc_id") == OtcConfig.VPC) :
+                OtcConfig.SOURCE_GROUP_ID = security_group["id"]
+                if OtcConfig.DEBUG:
+                    print "SOURCE_GROUP + VPC"
+                    print OtcConfig.SECUGROUP
+                    print OtcConfig.SOURCE_GROUP_ID
+                    print OtcConfig.VPCID                   
+
 
+        if OtcConfig.DEBUG:
+            print OtcConfig.SECUGROUP
+            print OtcConfig.SOURCE_GROUP_ID
+            print OtcConfig.VPCID
+            
         OtcConfig.SECUGROUP = OtcConfig.SECUGROUP
         return OtcConfig.SECUGROUP