diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/rest/Access.java b/src/main/java/org/gcube/informationsystem/resourceregistry/rest/Access.java
index 5f08f35..2e12e77 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/rest/Access.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/rest/Access.java
@@ -13,6 +13,7 @@ import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.Response;
 import javax.ws.rs.core.Response.Status;
 
+import org.gcube.common.authorization.library.provider.CalledMethodProvider;
 import org.gcube.informationsystem.resourceregistry.ResourceInitializer;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.er.ERAvailableInAnotherContextException;
@@ -20,6 +21,7 @@ import org.gcube.informationsystem.resourceregistry.api.exceptions.er.ERNotFound
 import org.gcube.informationsystem.resourceregistry.api.exceptions.query.InvalidQueryException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.schema.SchemaNotFoundException;
 import org.gcube.informationsystem.resourceregistry.api.rest.AccessPath;
+import org.gcube.informationsystem.resourceregistry.api.rest.httputils.HTTPCall.HTTPMETHOD;
 import org.gcube.informationsystem.resourceregistry.er.ERManagement;
 import org.gcube.informationsystem.resourceregistry.er.entity.EntityManagement;
 import org.gcube.informationsystem.resourceregistry.er.relation.RelationManagement;
@@ -86,6 +88,10 @@ public class Access {
 	public Response exists(@PathParam(TYPE_PATH_PARAM) String type,
 			@PathParam(ID_PATH_PARAM) String id) throws ERNotFoundException, 
 			ERAvailableInAnotherContextException, ResourceRegistryException {
+		CalledMethodProvider.instance.set(
+				HTTPMETHOD.HEAD.name() + " /" + AccessPath.ACCESS_PATH_PART + 
+				"/" + AccessPath.INSTANCE_PATH_PART + "/" + type + "/{" + ID_PATH_PARAM + "}");
+		
 		logger.info("Requested to check if {} with id {} exists", type, id);
 		@SuppressWarnings("rawtypes")
 		ERManagement erManagement = ERManagement.getERManagement(type);
@@ -126,6 +132,11 @@ public class Access {
 	public String getInstance(@PathParam(TYPE_PATH_PARAM) String type,
 			@PathParam(ID_PATH_PARAM) String id)
 			throws ERNotFoundException, ResourceRegistryException {
+		
+		CalledMethodProvider.instance.set(
+				HTTPMETHOD.GET.name() + " /" + AccessPath.ACCESS_PATH_PART + 
+				"/" + AccessPath.INSTANCE_PATH_PART + "/" + type + "/{" + ID_PATH_PARAM + "}");
+		
 		logger.info("Requested {} with id {}", type, id);
 
 		@SuppressWarnings("rawtypes")
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/rest/ERManager.java b/src/main/java/org/gcube/informationsystem/resourceregistry/rest/ERManager.java
index 88aaeab..537f41d 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/rest/ERManager.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/rest/ERManager.java
@@ -47,11 +47,6 @@ public class ERManager {
 	public static final String ID_PATH_PARAM = "id";
 	public static final String TYPE_PATH_PARAM = "type";
 
-	/*
-	public static final String SOURCE_ID_PATH_PARAM = "sourceId";
-	public static final String TARGET_ID_PATH_PARAM = "targetId";
-	*/
-	
 	/**
 	 * e.g. PUT /resource-registry/er/facet/ContactFacet
 	 * 
@@ -65,7 +60,7 @@ public class ERManager {
 	public Response createFacet(@PathParam(TYPE_PATH_PARAM) String type, String json)
 			throws FacetAlreadyPresentException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.PUT.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.PUT.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.FACET_PATH_PART + "/" + type);
 		logger.info("requested facet creation for type {}", type);
 		logger.trace("requested facet creation for type {} defined by {} ", type, json);
@@ -90,7 +85,7 @@ public class ERManager {
 	public String updateFacet(@PathParam(ID_PATH_PARAM) String uuid, String json)
 			throws FacetNotFoundException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.POST.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.POST.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.FACET_PATH_PART + "/{" + ID_PATH_PARAM + "}");
 		logger.info("requested facet update for id {}", uuid);
 		logger.trace("requested facet update for id {} with {}", uuid, json);
@@ -109,7 +104,7 @@ public class ERManager {
 	public boolean deleteFacet(@PathParam(ID_PATH_PARAM) String uuid)
 			throws FacetNotFoundException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.DELETE.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.DELETE.name() + " /" + ERPath.ER_PATH_PART + 
 				"/"	+ ERPath.FACET_PATH_PART + "/{" + ID_PATH_PARAM + "}");
 		logger.info("Requested to delete Facet with id {}", uuid);
 		FacetManagement facetManagement = new FacetManagement();
@@ -132,7 +127,7 @@ public class ERManager {
 	public Response createResource(@PathParam(TYPE_PATH_PARAM) String type, String json)
 			throws ResourceAlreadyPresentException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.PUT.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.PUT.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.RESOURCE_PATH_PART + "/" + type);
 		logger.info("requested resource creation for type {}", type);
 		logger.trace("requested resource creation for type {} with json {}", type, json);
@@ -157,7 +152,7 @@ public class ERManager {
 	public String updateResource(@PathParam(ID_PATH_PARAM) String uuid, String json)
 			throws ResourceNotFoundException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.POST.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.POST.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.RESOURCE_PATH_PART + "/{" + ID_PATH_PARAM + "}");
 		logger.info("requested resource update for id {}", uuid);
 		logger.trace("requested resource update for id {} with {}", uuid, json);
@@ -175,7 +170,7 @@ public class ERManager {
 	@Path(ERPath.RESOURCE_PATH_PART + "/{" + ID_PATH_PARAM + "}")
 	public boolean deleteResource(@PathParam(ID_PATH_PARAM) String uuid) throws ResourceNotFoundException, Exception {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.DELETE.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.DELETE.name() + " /" + ERPath.ER_PATH_PART + 
 				"/"	+ ERPath.RESOURCE_PATH_PART + "/{" + ID_PATH_PARAM + "}");
 		logger.info("requested resource deletion for id {}", uuid);
 		ResourceManagement resourceManagement = new ResourceManagement();
@@ -197,7 +192,7 @@ public class ERManager {
 	public Response createConsistsOf(@PathParam(TYPE_PATH_PARAM) String type, String json)
 			throws ResourceAlreadyPresentException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.PUT.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.PUT.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.CONSISTS_OF_PATH_PART + "/" + type);
 		logger.info("Requested to create {} {} of type {}", ConsistsOf.NAME, Relation.NAME, type);
 		logger.trace("Requested to create {} {} of type {} : {}", ConsistsOf.NAME, Relation.NAME, type, json);
@@ -217,7 +212,7 @@ public class ERManager {
 	@Path(ERPath.CONSISTS_OF_PATH_PART + "/{" + ID_PATH_PARAM + "}")
 	public boolean detachFacet(@PathParam(ID_PATH_PARAM) String consistOfUUID) throws ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.DELETE.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.DELETE.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.CONSISTS_OF_PATH_PART + "/{" + ID_PATH_PARAM + "}");
 		logger.info("requested to detach {}", consistOfUUID);
 		ConsistsOfManagement consistsOfManagement = new ConsistsOfManagement();
@@ -238,7 +233,7 @@ public class ERManager {
 	public Response createIsRelatedTo(@PathParam(TYPE_PATH_PARAM) String type, String json)
 			throws ResourceAlreadyPresentException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.PUT.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.PUT.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.IS_RELATED_TO_PATH_PART + "/" + type);
 		logger.info("Requested to create {} {} of type {} : {}", IsRelatedTo.NAME, Relation.NAME, type, json);
 		IsRelatedToManagement isRelatedToManagement = new IsRelatedToManagement();
@@ -257,7 +252,7 @@ public class ERManager {
 	@Path(ERPath.IS_RELATED_TO_PATH_PART + "/{" + ID_PATH_PARAM + "}")
 	public boolean detachResource(@PathParam(ID_PATH_PARAM) String relatedToUUID) throws ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.DELETE.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.DELETE.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.IS_RELATED_TO_PATH_PART + "/{" + ID_PATH_PARAM + "}");
 		logger.info("requested to detach {}", relatedToUUID);
 		IsRelatedToManagement isRelatedToManagement = new IsRelatedToManagement();
@@ -274,7 +269,7 @@ public class ERManager {
 	public boolean addResourceToContext(@PathParam(ID_PATH_PARAM) String uuid)
 			throws ResourceNotFoundException, ContextNotFoundException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.POST.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.POST.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.ADD_PATH_PART + "/" + ERPath.RESOURCE_PATH_PART + "/{" + ID_PATH_PARAM + "}");
 		logger.info("requested to add {} with UUID {} to current context {}", Resource.NAME, uuid,
 				ContextUtility.getCurrentContext());
@@ -292,7 +287,7 @@ public class ERManager {
 	public boolean addFacetToContext(@PathParam(ID_PATH_PARAM) String uuid)
 			throws FacetNotFoundException, ContextNotFoundException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.POST.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.POST.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.ADD_PATH_PART + "/" + ERPath.FACET_PATH_PART + "/{" + ID_PATH_PARAM + "}");
 		logger.info("requested to add {} with UUID {} to current context {}", Facet.NAME, uuid,
 				ContextUtility.getCurrentContext());
@@ -310,7 +305,7 @@ public class ERManager {
 	public boolean removeResourceFromContext(@PathParam(ID_PATH_PARAM) String uuid)
 			throws ResourceNotFoundException, ContextNotFoundException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.POST.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.POST.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.REMOVE_PATH_PART + "/" + ERPath.RESOURCE_PATH_PART + "/{" + ID_PATH_PARAM + "}");
 		logger.info("requested to remove {} with UUID {} from current context {}", Resource.NAME, uuid,
 				ContextUtility.getCurrentContext());
@@ -328,7 +323,7 @@ public class ERManager {
 	public boolean removeFacetFromContext(@PathParam(ID_PATH_PARAM) String uuid)
 			throws FacetNotFoundException, ContextNotFoundException, ResourceRegistryException {
 		CalledMethodProvider.instance.set(
-				HTTPMETHOD.POST.name() + "/" + ERPath.ER_PATH_PART + 
+				HTTPMETHOD.POST.name() + " /" + ERPath.ER_PATH_PART + 
 				"/" + ERPath.REMOVE_PATH_PART + "/" + ERPath.FACET_PATH_PART + "/{" + ID_PATH_PARAM + "}");
 		logger.info("requested to remove {} with UUID {} from current context {}", Facet.NAME, uuid,
 				ContextUtility.getCurrentContext());