diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/api/exceptions/schema/SchemaAlreadyPresentException.java b/src/main/java/org/gcube/informationsystem/resourceregistry/api/exceptions/schema/SchemaAlreadyPresentException.java
new file mode 100644
index 0000000..c44160b
--- /dev/null
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/api/exceptions/schema/SchemaAlreadyPresentException.java
@@ -0,0 +1,27 @@
+package org.gcube.informationsystem.resourceregistry.api.exceptions.schema;
+
+import org.gcube.informationsystem.resourceregistry.api.exceptions.AlreadyPresent;
+
+/**
+ * @author Luca Frosini (ISTI - CNR)
+ */
+public class SchemaAlreadyPresentException extends SchemaException implements AlreadyPresent {
+
+	/**
+	 * Generated Serial Version UID
+	 */
+	private static final long serialVersionUID = -6141449434537456516L;
+
+	public SchemaAlreadyPresentException(String message) {
+		super(message);
+	}
+
+	public SchemaAlreadyPresentException(Throwable cause) {
+		super(cause);
+	}
+
+	public SchemaAlreadyPresentException(String message, Throwable cause) {
+		super(message, cause);
+	}
+
+}