diff --git a/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/InvalidFeel.dmn b/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/InvalidFeel.dmn
index 9bccb547986..b7b58f6ae11 100644
--- a/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/InvalidFeel.dmn
+++ b/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/InvalidFeel.dmn
@@ -1,4 +1,22 @@
 <?xml version="1.0" encoding="UTF-8" ?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you 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.
+  -->
 <definitions xmlns="https://www.omg.org/spec/DMN/20230324/MODEL/" expressionLanguage="https://www.omg.org/spec/DMN/20230324/FEEL/" namespace="https://kie.org/dmn/_9DF86C49-C80A-4744-9F50-BCE65A89C98C" id="_A3750F9C-1684-4E92-9829-C4E7448E618B" name="DMN_33900B8B-73DD-4D1E-87E9-F6C3FE534B43" xmlns:dmndi="https://www.omg.org/spec/DMN/20230324/DMNDI/" xmlns:dc="http://www.omg.org/spec/DMN/20180521/DC/" xmlns:di="http://www.omg.org/spec/DMN/20180521/DI/" xmlns:kie="https://kie.org/dmn/extensions/1.0">
   <inputData name="Person Age" id="_66BAE7BF-A7DA-410F-B3D9-C0497CC8383A">
     <variable name="Person Age" id="_B1BE45B0-A2DE-45A9-932D-B6ED19BE1115" typeRef="number" />
diff --git a/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/Invalid_decisions_model.dmn b/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/Invalid_decisions_model.dmn
index e73f3f0425a..75383661572 100644
--- a/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/Invalid_decisions_model.dmn
+++ b/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/Invalid_decisions_model.dmn
@@ -1,4 +1,22 @@
 <?xml version="1.0" encoding="UTF-8" ?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you 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.
+  -->
 <definitions xmlns="https://www.omg.org/spec/DMN/20230324/MODEL/" xmlns:dmndi="https://www.omg.org/spec/DMN/20230324/DMNDI/" xmlns:dc="http://www.omg.org/spec/DMN/20180521/DC/" xmlns:di="http://www.omg.org/spec/DMN/20180521/DI/" xmlns:kie="https://kie.org/dmn/extensions/1.0" expressionLanguage="https://www.omg.org/spec/DMN/20230324/FEEL/" namespace="https://kie.org/dmn/_BDC29BCF-B5DC-4AD7-8A5F-43DC08780F97" id="_0CD0C230-1D15-46CC-BB7E-3E2361AF18E6" name="DMN_1A4BD262-7672-4887-9F25-986EE5277D16">
   <inputData name="Person Age" id="_F6A568CA-B8F4-45BF-9623-B440D043BACE">
     <description></description>
diff --git a/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/MultipleError.dmn b/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/MultipleError.dmn
index 53f2404f729..caef1591de9 100644
--- a/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/MultipleError.dmn
+++ b/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/MultipleError.dmn
@@ -1,4 +1,22 @@
 <?xml version="1.0" encoding="UTF-8" ?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you 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.
+  -->
 <definitions xmlns="https://www.omg.org/spec/DMN/20230324/MODEL/" expressionLanguage="https://www.omg.org/spec/DMN/20230324/FEEL/" namespace="https://kie.org/dmn/_231A34DE-33C6-4787-A51F-228C910D5EAF" id="_95E6CCE7-3816-41FD-ABEE-E2D4220D0939" name="DMN_DC99A8C4-4524-407D-B3D1-577442AED995" xmlns:dmndi="https://www.omg.org/spec/DMN/20230324/DMNDI/" xmlns:dc="http://www.omg.org/spec/DMN/20180521/DC/" xmlns:di="http://www.omg.org/spec/DMN/20180521/DI/" xmlns:kie="https://kie.org/dmn/extensions/1.0">
   <inputData name="Person Age" id="_2AC06105-267D-4F5B-AF38-6BE0614330A6">
     <variable name="Person Age" id="_C79D8F54-CCBA-47A3-97EA-F47763F07B66" typeRef="number" />
diff --git a/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/MultipleErrorDecision.dmn b/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/MultipleErrorDecision.dmn
index 3f5387e8764..bfe20aedbc7 100644
--- a/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/MultipleErrorDecision.dmn
+++ b/kie-dmn/kie-dmn-test-resources/src/test/resources/invalid_models/DMNv1_5/MultipleErrorDecision.dmn
@@ -1,4 +1,22 @@
 <?xml version="1.0" encoding="UTF-8" ?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you 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.
+  -->
 <definitions xmlns="https://www.omg.org/spec/DMN/20230324/MODEL/" expressionLanguage="https://www.omg.org/spec/DMN/20230324/FEEL/" namespace="https://kie.org/dmn/_36ADF828-4BE5-41E1-8808-6245D13C6AB4" id="_6F7429DB-9A23-4584-861D-959D42F81C93" name="DMN_45A15AF7-9910-4EAD-B249-8AE218B3BF43" xmlns:dmndi="https://www.omg.org/spec/DMN/20230324/DMNDI/" xmlns:dc="http://www.omg.org/spec/DMN/20180521/DC/" xmlns:di="http://www.omg.org/spec/DMN/20180521/DI/" xmlns:kie="https://kie.org/dmn/extensions/1.0">
   <inputData name="Age" id="_3DF67640-214C-405C-B08E-DB9B21BB697C">
     <variable name="Age" id="_8312D854-4604-46EC-AADF-E82FB52F9D28" typeRef="number" />