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 daaa473..83288d9 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
@@ -249,47 +249,6 @@ public abstract class RelationManagement<R extends Relation, S extends EntityMan
 			}
 		}
 
-		// Revisit this if-else because should be not needed anymore.
-		/*
-		 * if(this instanceof IsParentOfManagement) { if (!(sourceEntityManagement
-		 * instanceof ContextManagement && targetEntityManagement instanceof
-		 * ContextManagement)) { String error = String.format(
-		 * "A %s can be only created beetween two %s. " +
-		 * "Cannot instatiate %s beetween %s -> %s ", IsParentOf.NAME, Context.NAME,
-		 * erType, sourceEntityManagement.serialize(),
-		 * targetEntityManagement.serialize()); throw new
-		 * ResourceRegistryException(error); } } else { if (!(sourceEntityManagement
-		 * instanceof ResourceManagement)) { String error = String.format(
-		 * "Any type of %s can have only a %s as %s. " +
-		 * "Cannot instatiate %s beetween %s -> %s ", Relation.NAME, Resource.NAME,
-		 * Relation.SOURCE_PROPERTY, erType, sourceEntityManagement.serialize(),
-		 * targetEntityManagement.serialize()); throw new
-		 * ResourceRegistryException(error); }
-		 * 
-		 * if (this instanceof IsRelatedToManagement) { if (!(targetEntityManagement
-		 * instanceof ResourceManagement)) { String error =
-		 * String.format("A %s can have only a %s as %s. " +
-		 * "Cannot instatiate %s beetween %s -> %s ", accessType.getName(),
-		 * Resource.NAME, Relation.TARGET_PROPERTY, erType,
-		 * sourceEntityManagement.serialize(), targetEntityManagement.serialize());
-		 * throw new ResourceRegistryException(error); } } else if (this instanceof
-		 * ConsistsOfManagement) { if (!(targetEntityManagement instanceof
-		 * FacetManagement)) { String error =
-		 * String.format("A %s can have only a %s as %s. " +
-		 * "Cannot instatiate %s beetween %s -> %s ", accessType.getName(), Facet.NAME,
-		 * Relation.TARGET_PROPERTY, erType, sourceEntityManagement.serialize(),
-		 * targetEntityManagement.serialize()); throw new
-		 * ResourceRegistryException(error); } } else { String error =
-		 * String.format("{%s is not a %s nor a %s. " +
-		 * "This is really strange and should not occur. " + "Please Investigate it.",
-		 * this, IsRelatedToManagement.class.getSimpleName(),
-		 * ConsistsOfManagement.class.getSimpleName()); throw new
-		 * ResourceRegistryException(error); }
-		 * 
-		 * }
-		 */
-		// end of if-else to be revisited
-
 		logger.trace("Creating {} beetween {} -> {}", erType, getSourceEntityManagement().serialize(),
 				getTargetEntityManagement().serialize());