diff --git a/apps/dhp-mdstore-manager/src/main/java/eu/dnetlib/data/mdstore/manager/utils/ZeppelinClient.java b/apps/dhp-mdstore-manager/src/main/java/eu/dnetlib/data/mdstore/manager/utils/ZeppelinClient.java
index dc77620a..b3088311 100644
--- a/apps/dhp-mdstore-manager/src/main/java/eu/dnetlib/data/mdstore/manager/utils/ZeppelinClient.java
+++ b/apps/dhp-mdstore-manager/src/main/java/eu/dnetlib/data/mdstore/manager/utils/ZeppelinClient.java
@@ -88,7 +88,7 @@ public class ZeppelinClient {
 			.findFirst();
 
 		if (oldNoteId.isPresent()) {
-			log.info("Returning existing note: " + oldNoteId.get());
+			log.debug("Returning existing note: " + oldNoteId.get());
 			return zeppelinBaseUrl + "/#/notebook/" + oldNoteId.get();
 		}
 
@@ -163,13 +163,13 @@ public class ZeppelinClient {
 
 				final String firstPart = StringUtils.substringBeforeLast(n.get("name"), "-");
 				if (!map.containsKey(firstPart)) {
-					log.info("Evaluating note " + n.get("name") + " for deletion: CONFIRMED");
+					log.debug("Evaluating note " + n.get("name") + " for deletion: CONFIRMED");
 					map.put(firstPart, 1);
 				} else if (map.get(firstPart) < MAX_NUMBER_OF_MD_NOTES) {
-					log.info("Evaluating note " + n.get("name") + " for deletion: CONFIRMED");
+					log.debug("Evaluating note " + n.get("name") + " for deletion: CONFIRMED");
 					map.put(firstPart, map.get(firstPart) + 1);
 				} else {
-					log.info("Evaluating note " + n.get("name") + " for deletion: TO_DELETE");
+					log.debug("Evaluating note " + n.get("name") + " for deletion: TO_DELETE");
 					callApi(HttpMethod.DELETE, "notebook/" + n.get("id"), SimpleResponse.class, null);
 				}
 			}
@@ -209,19 +209,19 @@ public class ZeppelinClient {
 
 		switch (method) {
 		case GET:
-			log.info("Performing GET: " + url);
+			log.debug("Performing GET: " + url);
 			res = restTemplate.getForEntity(url, resClazz);
 			break;
 		case POST:
-			log.info("Performing POST: " + url);
+			log.debug("Performing POST: " + url);
 			res = restTemplate.postForEntity(url, objRequest, resClazz);
 			break;
 		case PUT:
-			log.info("Performing PUT: " + url);
+			log.debug("Performing PUT: " + url);
 			restTemplate.put(url, objRequest);
 			break;
 		case DELETE:
-			log.info("Performing DELETE: " + url);
+			log.debug("Performing DELETE: " + url);
 			restTemplate.delete(url);
 			break;
 		default: