diff --git a/osam-core/common/pom.xml b/osam-core/common/pom.xml
new file mode 100644
index 0000000..8c0fc70
--- /dev/null
+++ b/osam-core/common/pom.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--/*-
+        * ============LICENSE_START=======================================================
+        * OSAM Core
+        * ================================================================================
+        * Copyright (C) 2018 Netsia
+        * ================================================================================
+        * 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.
+        * ============LICENSE_END=========================================================
+        */-->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>osam-core</artifactId>
+        <groupId>org.onap.osam</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>common</artifactId>
+
+
+</project>
\ No newline at end of file
diff --git a/osam-core/common/src/main/java/org/onap/osam/common/exception/BadFormatException.java b/osam-core/common/src/main/java/org/onap/osam/common/exception/BadFormatException.java
new file mode 100644
index 0000000..3bab403
--- /dev/null
+++ b/osam-core/common/src/main/java/org/onap/osam/common/exception/BadFormatException.java
@@ -0,0 +1,33 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * OSAM Core
+ * ================================================================================
+ * Copyright (C) 2018 Netsia
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+
+
+package org.onap.osam.common.exception;
+
+
+/**
+ * Created by cemturker on 19.09.2018.
+ */
+public class BadFormatException extends RuntimeException {
+    public BadFormatException(String message) {
+        super(message);
+    }
+}
diff --git a/osam-core/common/src/main/java/org/onap/osam/common/exception/InvalidOperationException.java b/osam-core/common/src/main/java/org/onap/osam/common/exception/InvalidOperationException.java
new file mode 100644
index 0000000..7ac9547
--- /dev/null
+++ b/osam-core/common/src/main/java/org/onap/osam/common/exception/InvalidOperationException.java
@@ -0,0 +1,32 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * OSAM Core
+ * ================================================================================
+ * Copyright (C) 2018 Netsia
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+
+
+package org.onap.osam.common.exception;
+
+/**
+ * Created by Zafer Kaban on 18.09.2018.
+ */
+public class InvalidOperationException extends RuntimeException {
+    public InvalidOperationException(String message) {
+        super(message);
+    }
+}
diff --git a/osam-core/common/src/main/java/org/onap/osam/common/exception/NotFoundException.java b/osam-core/common/src/main/java/org/onap/osam/common/exception/NotFoundException.java
new file mode 100644
index 0000000..e850c43
--- /dev/null
+++ b/osam-core/common/src/main/java/org/onap/osam/common/exception/NotFoundException.java
@@ -0,0 +1,33 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * OSAM Core
+ * ================================================================================
+ * Copyright (C) 2018 Netsia
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+
+
+package org.onap.osam.common.exception;
+
+
+/**
+ * Created by cemturker on 18.09.2018.
+ */
+public class NotFoundException extends RuntimeException {
+    public NotFoundException(String message) {
+        super(message);
+    }
+}
diff --git a/osam-core/common/src/main/java/org/onap/osam/common/exception/UnknownTypeException.java b/osam-core/common/src/main/java/org/onap/osam/common/exception/UnknownTypeException.java
new file mode 100644
index 0000000..7b13329
--- /dev/null
+++ b/osam-core/common/src/main/java/org/onap/osam/common/exception/UnknownTypeException.java
@@ -0,0 +1,33 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * OSAM Core
+ * ================================================================================
+ * Copyright (C) 2018 Netsia
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+
+
+package org.onap.osam.common.exception;
+
+
+/**
+ * Created by cemturker on 18.09.2018.
+ */
+public class UnknownTypeException extends RuntimeException {
+    public UnknownTypeException(String message) {
+        super(message);
+    }
+}