diff --git a/src/main/java/eu/dnetlib/repo/manager/service/aai/registry/RegistryCalls.java b/src/main/java/eu/dnetlib/repo/manager/service/aai/registry/RegistryCalls.java
index 12d2cfc..224267d 100644
--- a/src/main/java/eu/dnetlib/repo/manager/service/aai/registry/RegistryCalls.java
+++ b/src/main/java/eu/dnetlib/repo/manager/service/aai/registry/RegistryCalls.java
@@ -15,6 +15,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestClientException;
 
 import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
@@ -55,7 +56,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public List<String> getUserIdentifiersByCoPersonId(Integer coPersonId) {
+    public List<String> getUserIdentifiersByCoPersonId(Integer coPersonId) throws RestClientException {
         List<String> ids = new ArrayList<>();
         Map<String, String> params = new HashMap<>();
         params.put("copersonid", coPersonId.toString());
@@ -86,7 +87,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public List<Integer> getCoPersonIdsByEmail(String email) {
+    public List<Integer> getCoPersonIdsByEmail(String email) throws RestClientException {
         List<Integer> coPersonIds = new ArrayList<>();
         Map<String, String> params = new HashMap<>();
         params.put("mail", email);
@@ -113,7 +114,7 @@ public class RegistryCalls implements AaiRegistryService {
         }
     }
 
-    public Integer getCoPersonIdByIdentifier(String sub) {
+    public Integer getCoPersonIdByIdentifier(String sub) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("search.identifier", sub);
         params.put("coid", coid);
@@ -122,7 +123,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public JsonArray getCous(String name) {
+    public JsonArray getCous(String name) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         if (name != null) {
             try {
@@ -163,7 +164,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public JsonArray getRoles(Integer coPersonId) {
+    public JsonArray getRoles(Integer coPersonId) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("coid", coid);
         params.put("copersonid", coPersonId.toString());
@@ -204,7 +205,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public JsonArray getUserGroups(Integer coPersonId) {
+    public JsonArray getUserGroups(Integer coPersonId) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("copersonid", coPersonId.toString());
         JsonElement response = httpUtils.get("co_groups.json", params);
@@ -212,7 +213,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public JsonObject getUserAdminGroup(Integer coPersonId, Integer couId) {
+    public JsonObject getUserAdminGroup(Integer coPersonId, Integer couId) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("copersonid", coPersonId.toString());
         JsonElement response = httpUtils.get("co_groups.json", params);
@@ -229,7 +230,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public JsonArray getCouGroups(Integer couId) {
+    public JsonArray getCouGroups(Integer couId) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("couid", couId.toString());
         JsonElement response = httpUtils.get("co_groups.json", params);
@@ -248,7 +249,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public JsonArray getGroupMembers(Integer coGroupId) {
+    public JsonArray getGroupMembers(Integer coGroupId) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("cogroupid", coGroupId.toString());
         JsonElement response = httpUtils.get("co_group_members.json", params);
@@ -257,7 +258,7 @@ public class RegistryCalls implements AaiRegistryService {
 
 
     @Override
-    public JsonArray getUserEmailByCouId(Integer couId, boolean admin) {
+    public JsonArray getUserEmailByCouId(Integer couId, boolean admin) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         if (couId == null) {
             throw new IllegalArgumentException("Provided 'couId' is null");
@@ -288,7 +289,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public JsonArray getUsersByCouId(Integer couId) {
+    public JsonArray getUsersByCouId(Integer couId) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("couid", couId.toString());
         JsonElement response = httpUtils.get("co_person_roles.json", params);
@@ -321,7 +322,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public JsonArray getUserNamesByCouId(Integer couId, boolean admin) {
+    public JsonArray getUserNamesByCouId(Integer couId, boolean admin) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("couid", couId.toString());
         if (admin) {
@@ -341,7 +342,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public JsonArray getUserIdByCouId(Integer couId, boolean admin) {
+    public JsonArray getUserIdByCouId(Integer couId, boolean admin) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("couid", couId.toString());
         if (admin) {
@@ -361,26 +362,26 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public void assignMemberRole(Integer coPersonId, Integer couId) {
+    public void assignMemberRole(Integer coPersonId, Integer couId) throws RestClientException {
         httpUtils.post("co_person_roles.json", jsonUtils.coPersonRoles(coPersonId, couId, "Active"));
     }
 
 
     @Override
-    public void removeMemberRole(Integer coPersonId, Integer couId, Integer id) {
+    public void removeMemberRole(Integer coPersonId, Integer couId, Integer id) throws RestClientException {
         if (id != null) {
             httpUtils.put("co_person_roles/" + id + ".json", jsonUtils.coPersonRoles(coPersonId, couId, "Deleted"));
         }
     }
 
     @Override
-    public Integer createRole(Role role) {
+    public Integer createRole(Role role) throws RestClientException {
         JsonElement element = httpUtils.post("cous.json", jsonUtils.createNewCou(role));
         return element.getAsJsonObject().get("Id").getAsInt();
     }
 
     @Override
-    public String getUserEmail(Integer coPersonId) {
+    public String getUserEmail(Integer coPersonId) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("copersonid", coPersonId.toString());
         JsonElement response = httpUtils.get("email_addresses.json", params);
@@ -389,7 +390,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public String getUserNames(Integer coPersonId) {
+    public String getUserNames(Integer coPersonId) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("copersonid", coPersonId.toString());
         JsonElement response = httpUtils.get("names.json", params);
@@ -402,7 +403,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public String getUserId(Integer coPersonId) {
+    public String getUserId(Integer coPersonId) throws RestClientException {
         Map<String, String> params = new HashMap<>();
         params.put("copersonid", coPersonId.toString());
         JsonElement response = httpUtils.get("identifiers.json", params);
@@ -411,7 +412,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public void assignAdminRole(Integer coPersonId, Integer couId) {
+    public void assignAdminRole(Integer coPersonId, Integer couId) throws RestClientException {
         JsonObject group = getCouAdminGroup(couId);
         if (group != null) {
             httpUtils.post("co_group_members.json", jsonUtils.coGroupMembers(group.get("Id").getAsInt(), coPersonId, true));
@@ -419,7 +420,7 @@ public class RegistryCalls implements AaiRegistryService {
     }
 
     @Override
-    public void removeAdminRole(Integer coPersonId, Integer couId) {
+    public void removeAdminRole(Integer coPersonId, Integer couId) throws RestClientException {
         JsonObject adminGroup = this.getCouAdminGroup(couId);
         JsonArray admins = this.getGroupMembers(adminGroup.get("Id").getAsInt());
         Integer id = null;
diff --git a/src/main/java/eu/dnetlib/repo/manager/service/aai/registry/utils/HttpUtils.java b/src/main/java/eu/dnetlib/repo/manager/service/aai/registry/utils/HttpUtils.java
index b294717..07b2f72 100644
--- a/src/main/java/eu/dnetlib/repo/manager/service/aai/registry/utils/HttpUtils.java
+++ b/src/main/java/eu/dnetlib/repo/manager/service/aai/registry/utils/HttpUtils.java
@@ -10,6 +10,7 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.*;
 import org.springframework.stereotype.Component;
 import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.web.client.RestClientException;
 import org.springframework.web.client.RestTemplate;
 import org.springframework.web.util.UriComponents;
 import org.springframework.web.util.UriComponentsBuilder;
@@ -32,7 +33,7 @@ public class HttpUtils {
     @Value("${services.provide.aai.registry.password}")
     private String password;
 
-    public JsonElement post(String path, JsonObject body) {
+    public JsonElement post(String path, JsonObject body) throws RestClientException {
         RestTemplate restTemplate = new RestTemplate();
         HttpHeaders headers = createHeaders(user, password);
         headers.setContentType(MediaType.APPLICATION_JSON);
@@ -41,7 +42,7 @@ public class HttpUtils {
         return getResponseEntityAsJsonElement(responseEntity);
     }
 
-    public JsonElement put(String path, JsonObject body) {
+    public JsonElement put(String path, JsonObject body) throws RestClientException {
         RestTemplate restTemplate = new RestTemplate();
         HttpHeaders headers = createHeaders(user, password);
         headers.setContentType(MediaType.APPLICATION_JSON);
@@ -50,7 +51,7 @@ public class HttpUtils {
         return getResponseEntityAsJsonElement(responseEntity);
     }
 
-    public JsonElement get(String path, Map<String, String> params) {
+    public JsonElement get(String path, Map<String, String> params) throws RestClientException {
         RestTemplate restTemplate = new RestTemplate();
         String url = createUrl(registryUrl + path, params);
         ResponseEntity<String> responseEntity = restTemplate.exchange
@@ -58,7 +59,7 @@ public class HttpUtils {
         return getResponseEntityAsJsonElement(responseEntity);
     }
 
-    public JsonElement delete(String path) {
+    public JsonElement delete(String path) throws RestClientException {
         RestTemplate restTemplate = new RestTemplate();
         String url = registryUrl + path;
         ResponseEntity<String> responseEntity = restTemplate.exchange(url, HttpMethod.DELETE, new HttpEntity<>(createHeaders(user, password)), String.class);