diff --git a/xos/synchronizer/invokers/__init__.py b/xos/synchronizer/invokers/__init__.py
index e69de29..d4e8062 100644
--- a/xos/synchronizer/invokers/__init__.py
+++ b/xos/synchronizer/invokers/__init__.py
@@ -0,0 +1,16 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
diff --git a/xos/synchronizer/invokers/invoker.py b/xos/synchronizer/invokers/invoker.py
index e645285..2c3271a 100644
--- a/xos/synchronizer/invokers/invoker.py
+++ b/xos/synchronizer/invokers/invoker.py
@@ -1,3 +1,19 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
 class Invoker(object):
 
     def __init__(self, **args):
diff --git a/xos/synchronizer/invokers/invokerfactory.py b/xos/synchronizer/invokers/invokerfactory.py
index b3628fe..5f0baaa 100644
--- a/xos/synchronizer/invokers/invokerfactory.py
+++ b/xos/synchronizer/invokers/invokerfactory.py
@@ -1,3 +1,19 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
 from services.metronetwork.models import *
 from synchronizers.metronetwork.invokers.networkmultipointtomultipointinvoker import NetworkMultipointToMultipointInvoker
 from synchronizers.metronetwork.invokers.networkedgetoedgepointinvoker import NetworkEdgeToEdgePointInvoker
diff --git a/xos/synchronizer/invokers/networkedgetoedgepointinvoker.py b/xos/synchronizer/invokers/networkedgetoedgepointinvoker.py
index 2c30d79..222717c 100644
--- a/xos/synchronizer/invokers/networkedgetoedgepointinvoker.py
+++ b/xos/synchronizer/invokers/networkedgetoedgepointinvoker.py
@@ -1,3 +1,19 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
 import json
 from synchronizers.metronetwork.invokers.invoker import Invoker
 from services.metronetwork.models import NetworkEdgePort
diff --git a/xos/synchronizer/invokers/networkedgetomultipointinvoker.py b/xos/synchronizer/invokers/networkedgetomultipointinvoker.py
index 9b8e88b..a61f33c 100644
--- a/xos/synchronizer/invokers/networkedgetomultipointinvoker.py
+++ b/xos/synchronizer/invokers/networkedgetomultipointinvoker.py
@@ -1,3 +1,19 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
 import json
 from synchronizers.metronetwork.invokers.invoker import Invoker
 from services.metronetwork.models import NetworkEdgeToMultipointConnection, NetworkEdgePort
diff --git a/xos/synchronizer/invokers/networkmultipointtomultipointinvoker.py b/xos/synchronizer/invokers/networkmultipointtomultipointinvoker.py
index 6b2ab42..40cea4a 100644
--- a/xos/synchronizer/invokers/networkmultipointtomultipointinvoker.py
+++ b/xos/synchronizer/invokers/networkmultipointtomultipointinvoker.py
@@ -1,3 +1,19 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
 import json
 from synchronizers.metronetwork.invokers.invoker import Invoker
 from services.metronetwork.models import NetworkMultipointToMultipointConnection, NetworkEdgePort
diff --git a/xos/synchronizer/invokers/remoteportinvoker.py b/xos/synchronizer/invokers/remoteportinvoker.py
index 1061dc4..bc84add 100644
--- a/xos/synchronizer/invokers/remoteportinvoker.py
+++ b/xos/synchronizer/invokers/remoteportinvoker.py
@@ -1,3 +1,19 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
 import json
 from synchronizers.metronetwork.invokers.invoker import Invoker
 from core.models import Site
diff --git a/xos/synchronizer/invokers/servicespokeinvoker.py b/xos/synchronizer/invokers/servicespokeinvoker.py
index 8470cf5..4fde8da 100644
--- a/xos/synchronizer/invokers/servicespokeinvoker.py
+++ b/xos/synchronizer/invokers/servicespokeinvoker.py
@@ -1,3 +1,19 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
 import json
 from synchronizers.metronetwork.invokers.invoker import Invoker
 from core.models import Site
diff --git a/xos/synchronizer/invokers/vnodglobalserviceinvoker.py b/xos/synchronizer/invokers/vnodglobalserviceinvoker.py
index a313171..99acd89 100644
--- a/xos/synchronizer/invokers/vnodglobalserviceinvoker.py
+++ b/xos/synchronizer/invokers/vnodglobalserviceinvoker.py
@@ -1,3 +1,19 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
 import json
 from synchronizers.metronetwork.invokers.invoker import Invoker
 from services.metronetwork.models import ServiceSpoke