diff --git a/CHANGELOG.md b/CHANGELOG.md
index 339c25d..4f69b33 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,8 +2,11 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 # Changelog for Resource Registry Schema Client
 
+## [v4.1.0-SNAPSHOT]
 
-## [v4.0.0] [r5.0.0] - 
+- Restrict the interface to accept ERElement classes and not all the Element classes [#21973]
+
+## [v4.0.0] [r5.0.0]
 
 - Switched JSON management to gcube-jackson [#19116]
 
diff --git a/pom.xml b/pom.xml
index 1b5d6b8..28a95cc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -8,7 +8,7 @@
 	</parent>
 	<groupId>org.gcube.information-system</groupId>
 	<artifactId>resource-registry-schema-client</artifactId>
-	<version>4.0.0</version>
+	<version>4.1.0-SNAPSHOT</version>
 	<name>Resource Registry Schema Client</name>
 	<description>Contains Non Idempotent API to manage Schemas in Resource Registry</description>
 
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/schema/ResourceRegistrySchemaClient.java b/src/main/java/org/gcube/informationsystem/resourceregistry/schema/ResourceRegistrySchemaClient.java
index 8d7133e..8b634f7 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/schema/ResourceRegistrySchemaClient.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/schema/ResourceRegistrySchemaClient.java
@@ -2,7 +2,7 @@ package org.gcube.informationsystem.resourceregistry.schema;
 
 import java.util.List;
 
-import org.gcube.informationsystem.base.reference.Element;
+import org.gcube.informationsystem.model.reference.ERElement;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.schema.SchemaException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.schema.SchemaNotFoundException;
@@ -13,13 +13,13 @@ import org.gcube.informationsystem.types.reference.Type;
  */
 public interface ResourceRegistrySchemaClient {
 
-	public <E extends Element> Type create(Class<E> clz)
+	public <ERElem extends ERElement> Type create(Class<ERElem> clz)
 			throws SchemaException, ResourceRegistryException;
 	
 	public String create(String typeDefinitition)
 			throws SchemaException, ResourceRegistryException;
 	
-	public <E extends Element> List<Type> read(Class<E> clz, Boolean polymorphic)
+	public <ERElem extends ERElement> List<Type> read(Class<ERElem> clz, Boolean polymorphic)
 			throws SchemaNotFoundException, ResourceRegistryException;
 	
 	public String read(String typeName, Boolean polymorphic)
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/schema/ResourceRegistrySchemaClientImpl.java b/src/main/java/org/gcube/informationsystem/resourceregistry/schema/ResourceRegistrySchemaClientImpl.java
index 3f31595..d4baf0b 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/schema/ResourceRegistrySchemaClientImpl.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/schema/ResourceRegistrySchemaClientImpl.java
@@ -7,7 +7,7 @@ import java.util.Map;
 
 import org.gcube.common.gxhttp.reference.GXConnection;
 import org.gcube.common.gxhttp.request.GXHTTPStringRequest;
-import org.gcube.informationsystem.base.reference.Element;
+import org.gcube.informationsystem.model.reference.ERElement;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.context.ContextAlreadyPresentException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.context.ContextNotFoundException;
@@ -36,7 +36,7 @@ public class ResourceRegistrySchemaClientImpl implements ResourceRegistrySchemaC
 	}
 	
 	@Override
-	public <E extends Element> Type create(Class<E> clz)
+	public <ERElem extends ERElement> Type create(Class<ERElem> clz)
 			throws SchemaException, ResourceRegistryException {
 		try {
 			String typeDefinition = TypeMapper.serializeType(clz);
@@ -78,7 +78,7 @@ public class ResourceRegistrySchemaClientImpl implements ResourceRegistrySchemaC
 	
 	
 	@Override
-	public <ISM extends Element> List<Type> read(Class<ISM> clz, Boolean polymorphic)
+	public <ERElem extends ERElement> List<Type> read(Class<ERElem> clz, Boolean polymorphic)
 			throws SchemaNotFoundException, ResourceRegistryException {
 		try {
 			String typeName = Utility.getTypeName(clz);