diff --git a/osmclient/common/wait.py b/osmclient/common/wait.py
index 488bc61..96cb851 100644
--- a/osmclient/common/wait.py
+++ b/osmclient/common/wait.py
@@ -193,5 +193,5 @@
     except ClientException as exc:
         message="Operation failed for {}:\nerror:\n{}".format(
             entity_label,
-            exc.message)
+            str(exc))
         raise ClientException(message)
diff --git a/osmclient/scripts/osm.py b/osmclient/scripts/osm.py
index 6e8bd88..ee102e6 100755
--- a/osmclient/scripts/osm.py
+++ b/osmclient/scripts/osm.py
@@ -319,8 +319,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         vnfd_list(ctx, nf_type, filter)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -334,8 +334,8 @@
             resp = ctx.obj.vnf.list(ns, filter)
         else:
             resp = ctx.obj.vnf.list()
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
     fullclassname = ctx.obj.__module__ + "." + ctx.obj.__class__.__name__
     if fullclassname == 'osmclient.sol005.client.Client':
@@ -453,8 +453,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.ns.list_op(name)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     table = PrettyTable(['id', 'operation', 'status'])
@@ -470,8 +470,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.nsi.list(filter)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
     table = PrettyTable(
         ['netslice instance name',
@@ -519,8 +519,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.nst.list(filter)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
     # print(yaml.safe_dump(resp))
     table = PrettyTable(['nst name', 'id'])
@@ -553,8 +553,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.nsi.list_op(name)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
     table = PrettyTable(['id', 'operation', 'status'])
     for op in resp:
@@ -595,8 +595,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.pdu.list(filter)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
     table = PrettyTable(
         ['pdu name',
@@ -629,8 +629,8 @@
     try:
         resp = ctx.obj.nsd.get(name)
         # resp = ctx.obj.nsd.get_individual(name)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     if literal:
@@ -674,8 +674,8 @@
     try:
         resp = ctx.obj.vnfd.get(name)
         # resp = ctx.obj.vnfd.get_individual(name)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     if literal:
@@ -741,8 +741,8 @@
     """
     try:
         ns = ctx.obj.ns.get(name)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     if literal:
@@ -780,8 +780,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.vnf.get(name)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     if literal:
@@ -803,8 +803,8 @@
 #    try:
 #        check_client_version(ctx.obj, ctx.command.name, 'v1')
 #        resp = ctx.obj.vnf.get_monitoring(vnf_name)
-#    except ClientException as inst:
-#        print((inst.message))
+#    except ClientException as e:
+#        print(str(e))
 #        exit(1)
 #
 #    table = PrettyTable(['vnf name', 'monitoring name', 'value', 'units'])
@@ -826,8 +826,8 @@
 #    try:
 #        check_client_version(ctx.obj, ctx.command.name, 'v1')
 #        resp = ctx.obj.ns.get_monitoring(ns_name)
-#    except ClientException as inst:
-#        print((inst.message))
+#    except ClientException as e:
+#        print(str(e))
 #        exit(1)
 #
 #    table = PrettyTable(['vnf name', 'monitoring name', 'value', 'units'])
@@ -854,8 +854,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         op_info = ctx.obj.ns.get_op(id)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     table = PrettyTable(['field', 'value'])
@@ -871,8 +871,8 @@
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.nst.get(name)
         #resp = ctx.obj.nst.get_individual(name)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     if literal:
@@ -916,8 +916,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         nsi = ctx.obj.nsi.get(name)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     if literal:
@@ -966,8 +966,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         op_info = ctx.obj.nsi.get_op(id)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     table = PrettyTable(['field', 'value'])
@@ -1016,8 +1016,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         pdu = ctx.obj.pdu.get(name)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     if literal:
@@ -1042,8 +1042,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.nsd.create(filename, overwrite)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1083,8 +1083,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.vnfd.create(filename, overwrite)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1186,8 +1186,8 @@
             ssh_keys=ssh_keys,
             account=vim_account,
             wait=wait)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1195,8 +1195,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.nst.create(filename, overwrite)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1243,8 +1243,8 @@
                 config=cf.read()
         ctx.obj.nsi.create(nst_name, nsi_name, config=config, ssh_keys=ssh_keys,
                            account=vim_account, wait=wait)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1350,8 +1350,8 @@
                 ifaces_list.append(new_iface)
             pdu["interfaces"] = ifaces_list
         ctx.obj.pdu.create(pdu)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 ####################
@@ -1362,8 +1362,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.nsd.update(name, content)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1397,8 +1397,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.vnfd.update(name, content)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1445,8 +1445,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.nst.update(name, content)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1487,8 +1487,8 @@
         else:
             check_client_version(ctx.obj, '--force')
             ctx.obj.nsd.delete(name, force)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1523,8 +1523,8 @@
         else:
             check_client_version(ctx.obj, '--force')
             ctx.obj.vnfd.delete(name, force)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1585,8 +1585,8 @@
         else:
             check_client_version(ctx.obj, '--force')
             ctx.obj.ns.delete(name, force, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1594,8 +1594,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.nst.delete(name, force)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1627,8 +1627,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.nsi.delete(name, force, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1674,8 +1674,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.pdu.delete(name, force)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1749,8 +1749,8 @@
             ctx.obj.vim.create(name, vim, sdn_controller, sdn_port_mapping, wait=wait)
         else:
             ctx.obj.vim.create(name, vim, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1802,8 +1802,8 @@
         if description: vim['description'] = description
         if config: vim['config'] = config
         ctx.obj.vim.update(name, vim, sdn_controller, sdn_port_mapping, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1828,8 +1828,8 @@
         else:
             check_client_version(ctx.obj, '--force')
             ctx.obj.vim.delete(name, force, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1870,8 +1870,8 @@
         resp = ctx.obj.vim.get(name)
         if 'vim_password' in resp:
             resp['vim_password']='********'
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     table = PrettyTable(['key', 'attribute'])
@@ -1941,8 +1941,8 @@
         if description: wim['description'] = description
         if config: wim['config'] = config
         ctx.obj.wim.create(name, wim, wim_port_mapping, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -1990,8 +1990,8 @@
         if description: wim['description'] = description
         if config: wim['config'] = config
         ctx.obj.wim.update(name, wim, wim_port_mapping, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2013,8 +2013,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.wim.delete(name, force, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2032,8 +2032,8 @@
             table.add_row([wim['name'], wim['uuid']])
         table.align = 'l'
         print(table)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2050,8 +2050,8 @@
         resp = ctx.obj.wim.get(name)
         if 'password' in resp:
             resp['wim_password']='********'
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     table = PrettyTable(['key', 'attribute'])
@@ -2126,8 +2126,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.sdnc.create(name, sdncontroller, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 @cli.command(name='sdnc-update', short_help='updates an SDN controller')
@@ -2188,8 +2188,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.sdnc.update(name, sdncontroller, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2211,8 +2211,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.sdnc.delete(name, force, wait=wait)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2225,8 +2225,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.sdnc.list(filter)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
     table = PrettyTable(['sdnc name', 'id'])
     for sdnc in resp:
@@ -2246,8 +2246,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.sdnc.get(name)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     table = PrettyTable(['key', 'attribute'])
@@ -2277,8 +2277,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.project.create(name, project)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2294,8 +2294,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.project.delete(name)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2308,8 +2308,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.project.list(filter)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
     table = PrettyTable(['name', 'id'])
     for proj in resp:
@@ -2329,8 +2329,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.project.get(name)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     table = PrettyTable(['key', 'attribute'])
@@ -2363,8 +2363,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.project.update(project, project_changes)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
 
 
 ####################
@@ -2405,8 +2405,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.user.create(username, user)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2457,8 +2457,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.user.update(username, user)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2475,8 +2475,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.user.delete(name)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2489,8 +2489,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.user.list(filter)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
     table = PrettyTable(['name', 'id'])
     for user in resp:
@@ -2512,8 +2512,8 @@
         resp = ctx.obj.user.get(name)
         if 'password' in resp:
             resp['password']='********'
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     table = PrettyTable(['key', 'attribute'])
@@ -2565,8 +2565,8 @@
         alarm['statistic'] = statistic
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.ns.create_alarm(alarm)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2581,8 +2581,8 @@
 #    try:
 #        check_client_version(ctx.obj, ctx.command.name)
 #        ctx.obj.ns.delete_alarm(name)
-#    except ClientException as inst:
-#        print(inst.message)
+#    except ClientException as e:
+#        print(str(e))
 #        exit(1)
 
 
@@ -2625,8 +2625,8 @@
                 print('{} {}'.format(ctx.obj.ns.export_metric(metric_data),i))
                 time.sleep(int(interval))
                 i+=1
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2647,8 +2647,8 @@
         fullclassname = ctx.obj.__module__ + "." + ctx.obj.__class__.__name__
         if fullclassname != 'osmclient.sol005.client.Client':
             ctx.obj.package.wait_for_upload(filename)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2663,8 +2663,8 @@
 #    try:
 #        check_client_version(ctx.obj, ctx.command.name, 'v1')
 #        resp = ctx.obj.ns.list()
-#    except ClientException as inst:
-#        print((inst.message))
+#    except ClientException as e:
+#        print(str(e))
 #        exit(1)
 #
 #    table = PrettyTable(
@@ -2713,8 +2713,8 @@
 #    try:
 #        check_client_version(ctx.obj, ctx.command.name, 'v1')
 #        ctx.obj.ns.scale(ns_name, ns_scale_group, index, wait=wait)
-#    except ClientException as inst:
-#        print((inst.message))
+#    except ClientException as e:
+#        print(str(e))
 #        exit(1)
 
 
@@ -2724,8 +2724,8 @@
 #    """list config agents"""
 #    try:
 #        check_client_version(ctx.obj, ctx.command.name, 'v1')
-#    except ClientException as inst:
-#        print((inst.message))
+#    except ClientException as e:
+#        print(str(e))
 #        exit(1)
 #    table = PrettyTable(['name', 'account-type', 'details'])
 #    for account in ctx.obj.vca.list():
@@ -2748,8 +2748,8 @@
 #    try:
 #        check_client_version(ctx.obj, ctx.command.name, 'v1')
 #        ctx.obj.vca.delete(name)
-#    except ClientException as inst:
-#        print((inst.message))
+#    except ClientException as e:
+#        print(str(e))
 #        exit(1)
 
 
@@ -2772,8 +2772,8 @@
 #    try:
 #        check_client_version(ctx.obj, ctx.command.name, 'v1')
 #        ctx.obj.vca.create(name, account_type, server, user, secret)
-#    except ClientException as inst:
-#        print((inst.message))
+#    except ClientException as e:
+#        print(str(e))
 #        exit(1)
 
 
@@ -2844,8 +2844,8 @@
             op_data['primitive_params'] = {}
         ctx.obj.ns.exec_op(ns_name, op_name='action', op_data=op_data, wait=wait)
 
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2874,8 +2874,8 @@
         if not scale_in and not scale_out:
             scale_out = True
         ctx.obj.ns.scale_vnf(ns_name, vnf_name, scaling_group, scale_in, scale_out)
-    except ClientException as inst:
-        print((inst.message))
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2900,8 +2900,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.role.create(name, permissions)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2933,8 +2933,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.role.update(name, set_name, None, add, remove)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2952,8 +2952,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         ctx.obj.role.delete(name)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
 
@@ -2968,8 +2968,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.role.list(filter)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
     table = PrettyTable(['name', 'id'])
     for role in resp:
@@ -2991,8 +2991,8 @@
     try:
         check_client_version(ctx.obj, ctx.command.name)
         resp = ctx.obj.role.get(name)
-    except ClientException as inst:
-        print(inst.message)
+    except ClientException as e:
+        print(str(e))
         exit(1)
 
     table = PrettyTable(['key', 'attribute'])
diff --git a/osmclient/sol005/ns.py b/osmclient/sol005/ns.py
index b0c37f1..8a9c9f0 100644
--- a/osmclient/sol005/ns.py
+++ b/osmclient/sol005/ns.py
@@ -242,7 +242,7 @@
             message="failed to create ns: {} nsd: {}\nerror:\n{}".format(
                     nsr_name,
                     nsd_name,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)
 
     def list_op(self, name, filter=None):
@@ -279,7 +279,7 @@
         except ClientException as exc:
             message="failed to get operation list of NS {}:\nerror:\n{}".format(
                     name,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)
 
     def get_op(self, operationId):
@@ -311,7 +311,7 @@
         except ClientException as exc:
             message="failed to get status of operation {}:\nerror:\n{}".format(
                     operationId,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)
 
     def exec_op(self, name, op_name, op_data=None, wait=False):
@@ -350,7 +350,7 @@
         except ClientException as exc:
             message="failed to exec operation {}:\nerror:\n{}".format(
                     name,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)
 
     def scale_vnf(self, ns_name, vnf_name, scaling_group, scale_in, scale_out, wait=False):
@@ -372,7 +372,7 @@
             self.exec_op(ns_name, op_name='scale', op_data=op_data, wait=wait)
         except ClientException as exc:
             message="failed to scale vnf {} of ns {}:\nerror:\n{}".format(
-                    vnf_name, ns_name, exc.message)
+                    vnf_name, ns_name, str(exc))
             raise ClientException(message)
 
     def create_alarm(self, alarm):
@@ -400,7 +400,7 @@
         except ClientException as exc:
             message="failed to create alarm: alarm {}\n{}".format(
                     alarm,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)
 
     def delete_alarm(self, name):
@@ -429,7 +429,7 @@
         except ClientException as exc:
             message="failed to delete alarm: alarm {}\n{}".format(
                     name,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)
 
     def export_metric(self, metric):
@@ -456,7 +456,7 @@
         except ClientException as exc:
             message="failed to export metric: metric {}\n{}".format(
                     metric,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)
 
     def get_field(self, ns_name, field):
diff --git a/osmclient/sol005/nsi.py b/osmclient/sol005/nsi.py
index d670a05..0fcfe1d 100644
--- a/osmclient/sol005/nsi.py
+++ b/osmclient/sol005/nsi.py
@@ -240,7 +240,7 @@
             message="failed to create nsi: {} nst: {}\nerror:\n{}".format(
                     nsi_name,
                     nst_name,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)
 
     def list_op(self, name, filter=None):
@@ -277,7 +277,7 @@
         except ClientException as exc:
             message="failed to get operation list of NSI {}:\nerror:\n{}".format(
                     name,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)
 
     def get_op(self, operationId):
@@ -309,7 +309,7 @@
         except ClientException as exc:
             message="failed to get status of operation {}:\nerror:\n{}".format(
                     operationId,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)
 
     def exec_op(self, name, op_name, op_data=None):
@@ -344,6 +344,6 @@
         except ClientException as exc:
             message="failed to exec operation {}:\nerror:\n{}".format(
                     name,
-                    exc.message)
+                    str(exc))
             raise ClientException(message)