diff --git a/src/main/java/sh/libre/scim/core/GroupScimService.java b/src/main/java/sh/libre/scim/core/GroupScimService.java
index 0648f10c106c3f7c918ad83d8fb743aef3d5fd2c..99c8c5cb52f9acdf2e33da466bbf94e783a1542e 100644
--- a/src/main/java/sh/libre/scim/core/GroupScimService.java
+++ b/src/main/java/sh/libre/scim/core/GroupScimService.java
@@ -99,13 +99,14 @@ public class GroupScimService extends AbstractScimService<GroupModel, Group> {
                 logger.debug(userMapping.getExternalIdAsEntityOnRemoteScimId());
                 logger.debug(userMapping.getIdAsKeycloakId());
                 groupMember.setValue(userMapping.getExternalIdAsEntityOnRemoteScimId().asString());
-                URI ref = new URI(String.format("Users/%s", userMapping.getExternalIdAsEntityOnRemoteScimId()));
+                String refString = String.format("Users/%s", userMapping.getExternalIdAsEntityOnRemoteScimId().asString());
+                URI ref = new URI(refString);
                 groupMember.setRef(ref.toString());
                 group.addMember(groupMember);
             } catch (NoSuchElementException e) {
                 logger.warnf("member %s not found for group %s", member, groupModel.getId());
             } catch (URISyntaxException e) {
-                logger.warnf("bad ref uri");
+                logger.warnf("bad ref uri for member " + member);
             }
         }
         return group;
diff --git a/src/main/java/sh/libre/scim/core/ScimClient.java b/src/main/java/sh/libre/scim/core/ScimClient.java
index 22bfa0e7ec06a0472cc56be271ffc1cab0cc3132..9189ad308b426ee33f884b4b4b4a97e7048345fe 100644
--- a/src/main/java/sh/libre/scim/core/ScimClient.java
+++ b/src/main/java/sh/libre/scim/core/ScimClient.java
@@ -83,6 +83,7 @@ public class ScimClient<S extends ResourceNode> implements AutoCloseable {
 
     private void checkResponseIsSuccess(ServerResponse<S> response) {
         if (!response.isSuccess()) {
+            LOGGER.warn("[SCIM] Issue on SCIM Server response ");
             LOGGER.warn(response.getResponseBody());
             LOGGER.warn(response.getHttpStatus());
         }
@@ -98,7 +99,6 @@ public class ScimClient<S extends ResourceNode> implements AutoCloseable {
 
     public void replace(EntityOnRemoteScimId externalId, S scimForReplace) {
         Retry retry = retryRegistry.retry("replace-%s".formatted(externalId.asString()));
-        LOGGER.warn(scimForReplace);
         ServerResponse<S> response = retry.executeSupplier(() -> scimRequestBuilder
                 .update(getResourceClass(), getScimEndpoint(), externalId.asString())
                 .setResource(scimForReplace)
diff --git a/src/main/java/sh/libre/scim/core/ScimDispatcher.java b/src/main/java/sh/libre/scim/core/ScimDispatcher.java
index 6be68dc3d2cd3c9bf48968474e1b18e1935cc5fa..8154bb393024c3fe3c7d28b87b8848dc69b2b324 100644
--- a/src/main/java/sh/libre/scim/core/ScimDispatcher.java
+++ b/src/main/java/sh/libre/scim/core/ScimDispatcher.java
@@ -146,7 +146,7 @@ public class ScimDispatcher {
 
     private void logAndRollback(ScrimProviderConfiguration scimServerConfiguration, ScimPropagationException e) {
         logger.error("[SCIM] Error while propagating to SCIM endpoint " + scimServerConfiguration.getId(), e);
-        session.getTransactionManager().rollback();
+        // TODO session.getTransactionManager().rollback();
     }
 
     private void initializeClientsIfNeeded() {