diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/context/IsParentOfManagement.java b/src/main/java/org/gcube/informationsystem/resourceregistry/context/IsParentOfManagement.java
index ab2e05e..c964f98 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/context/IsParentOfManagement.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/context/IsParentOfManagement.java
@@ -3,6 +3,7 @@ package org.gcube.informationsystem.resourceregistry.context;
 import java.util.UUID;
 
 import org.codehaus.jettison.json.JSONObject;
+import org.gcube.informationsystem.impl.embedded.PropagationConstraintImpl;
 import org.gcube.informationsystem.model.AccessType;
 import org.gcube.informationsystem.model.embedded.PropagationConstraint;
 import org.gcube.informationsystem.model.embedded.PropagationConstraint.AddConstraint;
@@ -31,8 +32,16 @@ import com.tinkerpop.blueprints.impls.orient.OrientGraph;
 @SuppressWarnings("rawtypes")
 public class IsParentOfManagement extends RelationManagement<IsParentOf,ContextManagement,ContextManagement> {
 	
+	public static final PropagationConstraint DEFAULT_IS_PARENT_OF_PC;
+
+	static {
+		DEFAULT_IS_PARENT_OF_PC = new PropagationConstraintImpl();
+		DEFAULT_IS_PARENT_OF_PC.setRemoveConstraint(RemoveConstraint.keep);
+		DEFAULT_IS_PARENT_OF_PC.setAddConstraint(AddConstraint.unpropagate);
+	}
+	
 	public IsParentOfManagement() {
-		super(AccessType.IS_PARENT_OF);
+		super(AccessType.IS_PARENT_OF, DEFAULT_IS_PARENT_OF_PC);
 	}
 	
 	public IsParentOfManagement(OrientGraph orientGraph) throws ResourceRegistryException {
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/er/ERManagement.java b/src/main/java/org/gcube/informationsystem/resourceregistry/er/ERManagement.java
index 2d6e705..975a131 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/er/ERManagement.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/er/ERManagement.java
@@ -21,7 +21,6 @@ import org.gcube.informationsystem.model.ER;
 import org.gcube.informationsystem.model.ISManageable;
 import org.gcube.informationsystem.model.embedded.Header;
 import org.gcube.informationsystem.model.entity.Context;
-import org.gcube.informationsystem.model.entity.Entity;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.AlreadyPresentException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.AvailableInAnotherContextException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.NotFoundException;
@@ -251,7 +250,7 @@ public abstract class ERManagement<ERType extends ER, El extends Element> {
 			
 			Header entityHeader = HeaderUtility.getHeader(jsonNode, true);
 			if(entityHeader != null) {
-				element.setProperty(Entity.HEADER_PROPERTY, entityHeader);
+				element.setProperty(ER.HEADER_PROPERTY, entityHeader);
 			} else {
 				entityHeader = HeaderUtility.addHeader(element, null);
 			}
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/ConsistsOfManagement.java b/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/ConsistsOfManagement.java
index 566753f..381e480 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/ConsistsOfManagement.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/ConsistsOfManagement.java
@@ -1,6 +1,10 @@
 package org.gcube.informationsystem.resourceregistry.er.relation;
 
+import org.gcube.informationsystem.impl.embedded.PropagationConstraintImpl;
 import org.gcube.informationsystem.model.AccessType;
+import org.gcube.informationsystem.model.embedded.PropagationConstraint;
+import org.gcube.informationsystem.model.embedded.PropagationConstraint.AddConstraint;
+import org.gcube.informationsystem.model.embedded.PropagationConstraint.RemoveConstraint;
 import org.gcube.informationsystem.model.relation.ConsistsOf;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.NotFoundException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
@@ -19,12 +23,20 @@ import com.tinkerpop.blueprints.impls.orient.OrientGraph;
 @SuppressWarnings("rawtypes")
 public class ConsistsOfManagement extends RelationManagement<ConsistsOf,ResourceManagement,FacetManagement> {
 	
+	public static final PropagationConstraint DEFAULT_CONSISTS_OF_PC;
+
+	static {
+		DEFAULT_CONSISTS_OF_PC = new PropagationConstraintImpl();
+		DEFAULT_CONSISTS_OF_PC.setRemoveConstraint(RemoveConstraint.cascadeWhenOrphan);
+		DEFAULT_CONSISTS_OF_PC.setAddConstraint(AddConstraint.propagate);
+	}
+	
 	public ConsistsOfManagement() {
-		super(AccessType.CONSISTS_OF);
+		super(AccessType.CONSISTS_OF, DEFAULT_CONSISTS_OF_PC);
 	}
 	
 	public ConsistsOfManagement(SecurityContext workingContext, OrientGraph orientGraph) {
-		super(AccessType.CONSISTS_OF, workingContext, orientGraph);
+		super(AccessType.CONSISTS_OF, workingContext, orientGraph, DEFAULT_CONSISTS_OF_PC);
 	}
 	
 	@Override
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/IsRelatedToManagement.java b/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/IsRelatedToManagement.java
index 44075a8..0c44339 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/IsRelatedToManagement.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/IsRelatedToManagement.java
@@ -1,6 +1,10 @@
 package org.gcube.informationsystem.resourceregistry.er.relation;
 
+import org.gcube.informationsystem.impl.embedded.PropagationConstraintImpl;
 import org.gcube.informationsystem.model.AccessType;
+import org.gcube.informationsystem.model.embedded.PropagationConstraint;
+import org.gcube.informationsystem.model.embedded.PropagationConstraint.AddConstraint;
+import org.gcube.informationsystem.model.embedded.PropagationConstraint.RemoveConstraint;
 import org.gcube.informationsystem.model.relation.IsRelatedTo;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.NotFoundException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
@@ -18,12 +22,20 @@ import com.tinkerpop.blueprints.impls.orient.OrientGraph;
 @SuppressWarnings("rawtypes")
 public class IsRelatedToManagement extends RelationManagement<IsRelatedTo,ResourceManagement,ResourceManagement> {
 	
+	public static final PropagationConstraint DEFAULT_IS_RELATED_TO_PC;
+
+	static {
+		DEFAULT_IS_RELATED_TO_PC = new PropagationConstraintImpl();
+		DEFAULT_IS_RELATED_TO_PC.setRemoveConstraint(RemoveConstraint.keep);
+		DEFAULT_IS_RELATED_TO_PC.setAddConstraint(AddConstraint.unpropagate);
+	}
+	
 	public IsRelatedToManagement() {
-		super(AccessType.IS_RELATED_TO);
+		super(AccessType.IS_RELATED_TO,DEFAULT_IS_RELATED_TO_PC);
 	}
 	
 	public IsRelatedToManagement(SecurityContext workingContext, OrientGraph orientGraph) {
-		super(AccessType.IS_RELATED_TO, workingContext, orientGraph);
+		super(AccessType.IS_RELATED_TO, workingContext, orientGraph, DEFAULT_IS_RELATED_TO_PC);
 	}
 	
 	@Override
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/RelationManagement.java b/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/RelationManagement.java
index 98d304e..12fe200 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/RelationManagement.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/er/relation/RelationManagement.java
@@ -8,6 +8,7 @@ import java.util.UUID;
 
 import org.codehaus.jettison.json.JSONArray;
 import org.codehaus.jettison.json.JSONObject;
+import org.gcube.informationsystem.impl.utils.ISMapper;
 import org.gcube.informationsystem.model.AccessType;
 import org.gcube.informationsystem.model.embedded.PropagationConstraint;
 import org.gcube.informationsystem.model.embedded.PropagationConstraint.AddConstraint;
@@ -29,14 +30,18 @@ import org.gcube.informationsystem.resourceregistry.er.ERManagementUtility;
 import org.gcube.informationsystem.resourceregistry.er.entity.EntityManagement;
 import org.gcube.informationsystem.resourceregistry.er.entity.FacetManagement;
 import org.gcube.informationsystem.resourceregistry.er.entity.ResourceManagement;
+import org.gcube.informationsystem.resourceregistry.utils.PropagationConstraintOrient;
 import org.gcube.informationsystem.resourceregistry.utils.Utility;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import com.orientechnologies.orient.core.metadata.schema.OType;
+import com.orientechnologies.orient.core.record.impl.ODocument;
 import com.tinkerpop.blueprints.Direction;
 import com.tinkerpop.blueprints.Edge;
 import com.tinkerpop.blueprints.Vertex;
 import com.tinkerpop.blueprints.impls.orient.OrientBaseGraph;
 import com.tinkerpop.blueprints.impls.orient.OrientEdge;
+import com.tinkerpop.blueprints.impls.orient.OrientElement;
 import com.tinkerpop.blueprints.impls.orient.OrientGraph;
 
 /**
@@ -51,7 +56,9 @@ public abstract class RelationManagement<R extends Relation, S extends EntityMan
 	protected S sourceEntityManagement;
 	protected T targetEntityManagement;
 	
-	protected RelationManagement(AccessType accessType) {
+	public final PropagationConstraint defaultPropagationConstraint;
+	
+	protected RelationManagement(AccessType accessType, PropagationConstraint defaultPropagationConstraint) {
 		super(accessType);
 		
 		this.ignoreKeys.add(Relation.HEADER_PROPERTY);
@@ -76,13 +83,14 @@ public abstract class RelationManagement<R extends Relation, S extends EntityMan
 				break;
 		}
 		
-		sourceEntityManagement = null;
-		targetEntityManagement = null;
-		
+		this.sourceEntityManagement = null;
+		this.targetEntityManagement = null;
+		this.defaultPropagationConstraint = defaultPropagationConstraint;
 	}
 	
-	protected RelationManagement(AccessType accessType, SecurityContext workingContext, OrientGraph orientGraph) {
-		this(accessType);
+	protected RelationManagement(AccessType accessType, SecurityContext workingContext, OrientGraph orientGraph,
+			PropagationConstraint defaultPropagationConstraint) {
+		this(accessType, defaultPropagationConstraint);
 		this.orientGraph = orientGraph;
 		setWorkingContext(workingContext);
 	}
@@ -202,6 +210,52 @@ public abstract class RelationManagement<R extends Relation, S extends EntityMan
 		return visitedSourceResources;
 	}
 	
+	protected PropagationConstraintOrient getPropagationConstraint(ODocument oDocument)
+			throws ResourceRegistryException {
+		
+		PropagationConstraintOrient propagationConstraintOrient = new PropagationConstraintOrient();
+		
+		PropagationConstraint propagationConstraint = null;
+		
+		if(oDocument == null) {
+			propagationConstraint = defaultPropagationConstraint;
+		} else if(oDocument instanceof PropagationConstraintOrient) {
+			propagationConstraint = (PropagationConstraint) oDocument;
+		} else {
+			try {
+				propagationConstraint = ISMapper.unmarshal(PropagationConstraint.class, oDocument.toJSON());
+			} catch(Exception e) {
+				logger.warn("Unable to recreate {}. {}", PropagationConstraint.NAME,
+						Utility.SHOULD_NOT_OCCUR_ERROR_MESSAGE);
+			}
+		}
+		
+		AddConstraint addConstraint = propagationConstraint.getAddConstraint();
+		if(addConstraint == null) {
+			addConstraint = defaultPropagationConstraint.getAddConstraint();
+			logger.warn("Unable to get {}. Default value ({}) will be used", AddConstraint.class.getSimpleName(),
+					addConstraint);
+		}
+		propagationConstraintOrient.setAddConstraint(addConstraint);
+		
+		RemoveConstraint removeConstraint = propagationConstraint.getRemoveConstraint();
+		if(removeConstraint == null) {
+			removeConstraint = defaultPropagationConstraint.getRemoveConstraint();
+			logger.warn("Unable to get {}. Default value ({}) will be used", RemoveConstraint.class.getSimpleName(),
+					removeConstraint);
+		}
+		propagationConstraintOrient.setRemoveConstraint(removeConstraint);
+		
+		return propagationConstraintOrient;
+	}
+	
+	protected void checkPropagationConstraint() throws ResourceRegistryException {
+		OrientElement orientElement = (OrientElement) element;
+		Object object = orientElement.getProperty(Relation.PROPAGATION_CONSTRAINT);
+		PropagationConstraintOrient pc = getPropagationConstraint((ODocument) object);
+		orientElement.setProperty(Relation.PROPAGATION_CONSTRAINT, pc, OType.EMBEDDED);
+	}
+	
 	@Override
 	protected Edge reallyCreate() throws ResourceRegistryException {
 		
@@ -222,7 +276,8 @@ public abstract class RelationManagement<R extends Relation, S extends EntityMan
 			targetEntityManagement = newTargetEntityManagement();
 			
 			if(!jsonNode.has(Relation.TARGET_PROPERTY)) {
-				throw new ResourceRegistryException("Error while creating " + elementType + ". No target definition found");
+				throw new ResourceRegistryException(
+						"Error while creating " + elementType + ". No target definition found");
 			}
 			
 			try {
@@ -255,6 +310,8 @@ public abstract class RelationManagement<R extends Relation, S extends EntityMan
 		
 		ERManagement.updateProperties(oClass, element, jsonNode, ignoreKeys, ignoreStartWithKeys);
 		
+		checkPropagationConstraint();
+		
 		logger.info("{} successfully created", elementType);
 		
 		return element;
@@ -288,7 +345,8 @@ public abstract class RelationManagement<R extends Relation, S extends EntityMan
 	}
 	
 	@Override
-	protected boolean reallyAddToContext(SecurityContext targetSecurityContext) throws ContextException, ResourceRegistryException {
+	protected boolean reallyAddToContext(SecurityContext targetSecurityContext)
+			throws ContextException, ResourceRegistryException {
 		getElement();
 		
 		AddConstraint addConstraint = AddConstraint.unpropagate;
@@ -335,7 +393,8 @@ public abstract class RelationManagement<R extends Relation, S extends EntityMan
 		return true;
 	}
 	
-	public boolean forcedAddToContext(SecurityContext targetSecurityContext) throws ContextException, ResourceRegistryException {
+	public boolean forcedAddToContext(SecurityContext targetSecurityContext)
+			throws ContextException, ResourceRegistryException {
 		
 		getElement();
 		
@@ -351,7 +410,8 @@ public abstract class RelationManagement<R extends Relation, S extends EntityMan
 	}
 	
 	@Override
-	protected boolean reallyRemoveFromContext(SecurityContext targetSecurityContext) throws ContextException, ResourceRegistryException {
+	protected boolean reallyRemoveFromContext(SecurityContext targetSecurityContext)
+			throws ContextException, ResourceRegistryException {
 		getElement();
 		
 		RemoveConstraint removeConstraint = RemoveConstraint.keep;
@@ -564,11 +624,13 @@ public abstract class RelationManagement<R extends Relation, S extends EntityMan
 			boolean added = forcedAddToContext(targetSecurityContext);
 			
 			orientGraph.commit();
-			logger.info("{} with UUID {} successfully added to Context with UUID {}", accessType.getName(), uuid, contextUUID);
+			logger.info("{} with UUID {} successfully added to Context with UUID {}", accessType.getName(), uuid,
+					contextUUID);
 			
 			return added;
 		} catch(Exception e) {
-			logger.error("Unable to add {} with UUID {} to Context with UUID {}", accessType.getName(), uuid, contextUUID, e);
+			logger.error("Unable to add {} with UUID {} to Context with UUID {}", accessType.getName(), uuid,
+					contextUUID, e);
 			if(orientGraph != null) {
 				orientGraph.rollback();
 			}
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/utils/HeaderUtility.java b/src/main/java/org/gcube/informationsystem/resourceregistry/utils/HeaderUtility.java
index 2baf888..a94481e 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/utils/HeaderUtility.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/utils/HeaderUtility.java
@@ -10,9 +10,8 @@ import org.gcube.common.authorization.library.provider.AuthorizationProvider;
 import org.gcube.common.authorization.library.provider.ClientInfo;
 import org.gcube.common.authorization.library.utils.Caller;
 import org.gcube.informationsystem.impl.utils.ISMapper;
+import org.gcube.informationsystem.model.ER;
 import org.gcube.informationsystem.model.embedded.Header;
-import org.gcube.informationsystem.model.entity.Entity;
-import org.gcube.informationsystem.model.entity.Resource;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -75,8 +74,8 @@ public class HeaderUtility {
 	
 	public static Header getHeader(JsonNode jsonNode, boolean creation)
 			throws JsonParseException, JsonMappingException, IOException {
-		if(jsonNode.has(Resource.HEADER_PROPERTY)) {
-			JsonNode headerNode = jsonNode.get(Resource.HEADER_PROPERTY);
+		if(jsonNode.has(ER.HEADER_PROPERTY)) {
+			JsonNode headerNode = jsonNode.get(ER.HEADER_PROPERTY);
 			if(headerNode.isNull()) {
 				return null;
 			}
@@ -117,27 +116,27 @@ public class HeaderUtility {
 	
 	public static Header addHeader(Element element, UUID uuid) {
 		Header header = createHeader(uuid);
-		element.setProperty(Entity.HEADER_PROPERTY, header);
+		element.setProperty(ER.HEADER_PROPERTY, header);
 		return header;
 	}
 	
 	public static Header addHeader(Edge edge, UUID uuid) {
 		Header header = createHeader(uuid);
-		edge.setProperty(Entity.HEADER_PROPERTY, header);
+		edge.setProperty(ER.HEADER_PROPERTY, header);
 		return header;
 	}
 	
 	public static Header getHeader(Element element) throws ResourceRegistryException {
-		return Utility.getEmbedded(Header.class, element, Entity.HEADER_PROPERTY);
+		return Utility.getEmbedded(Header.class, element, ER.HEADER_PROPERTY);
 	}
 	
 	public static void updateModifiedByAndLastUpdate(Element element) throws ResourceRegistryException {
-		ODocument oDocument = element.getProperty(Entity.HEADER_PROPERTY);
+		ODocument oDocument = element.getProperty(ER.HEADER_PROPERTY);
 		String modifiedBy = getUser();
 		oDocument.field(Header.MODIFIED_BY_PROPERTY, modifiedBy);
 		Date lastUpdateTime = Calendar.getInstance().getTime();
 		oDocument.field(Header.LAST_UPDATE_TIME_PROPERTY, lastUpdateTime);
-		element.setProperty(Entity.HEADER_PROPERTY, oDocument);
+		element.setProperty(ER.HEADER_PROPERTY, oDocument);
 	}
 	
 }
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/utils/PropagationConstraintOrient.java b/src/main/java/org/gcube/informationsystem/resourceregistry/utils/PropagationConstraintOrient.java
new file mode 100644
index 0000000..4ea969e
--- /dev/null
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/utils/PropagationConstraintOrient.java
@@ -0,0 +1,40 @@
+package org.gcube.informationsystem.resourceregistry.utils;
+
+import org.gcube.informationsystem.model.embedded.PropagationConstraint;
+
+import com.orientechnologies.orient.core.record.impl.ODocument;
+
+/**
+ * @author Luca Frosini (ISTI - CNR)
+ */
+public class PropagationConstraintOrient extends ODocument implements org.gcube.informationsystem.model.embedded.PropagationConstraint {
+	
+	public PropagationConstraintOrient() {
+		super(PropagationConstraint.NAME);
+	}
+	
+	protected PropagationConstraintOrient(String iClassName) {
+		super(iClassName);
+	}
+
+	@Override
+	public RemoveConstraint getRemoveConstraint() {
+		return RemoveConstraint.valueOf((String) this.field(PropagationConstraint.REMOVE_PROPERTY));
+	}
+
+	@Override
+	public void setRemoveConstraint(RemoveConstraint removeConstraint) {
+		this.field(PropagationConstraint.REMOVE_PROPERTY, removeConstraint.name());
+	}
+
+	@Override
+	public AddConstraint getAddConstraint() {
+		return AddConstraint.valueOf((String) this.field(PropagationConstraint.ADD_PROPERTY));
+	}
+
+	@Override
+	public void setAddConstraint(AddConstraint addConstraint) {
+		this.field(PropagationConstraint.ADD_PROPERTY, addConstraint.name());
+	}
+	
+}