diff --git a/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/json/input/Common.java b/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/json/input/Common.java
index ae5d671..f1a0933 100644
--- a/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/json/input/Common.java
+++ b/src/main/java/org/gcube/data_catalogue/grsf_publish_ws/json/input/Common.java
@@ -11,12 +11,14 @@ import org.gcube.data_catalogue.grsf_publish_ws.utils.groups.Source;
 import org.gcube.data_catalogue.grsf_publish_ws.utils.groups.Status;
 import org.gcube.data_catalogue.grsf_publish_ws.utils.groups.Type;
 
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
  * Information that both Stock and Fishery must contain
  * @author Costantino Perciante at ISTI-CNR (costantino.perciante@isti.cnr.it)
  */
+@JsonIgnoreProperties(value = {"author", "author_contact"}, ignoreUnknown = true) // ignore in serialization/deserialization
 public class Common {
 
 	@JsonProperty("description")
@@ -24,14 +26,14 @@ public class Common {
 
 	@JsonProperty("license")
 	private String license;
-
-	@JsonProperty("author") // @JsonIgnoreProperties(ignoreUnknown=true) // ignore in serialization/deserialization
+	
+	@JsonProperty("author")// filled automatically by the server
 	private String author;
 
 	@JsonProperty("version")
 	private Long version;
 
-	@JsonProperty("author_contact")
+	@JsonProperty("author_contact")// filled automatically by the service
 	private String authorContact;
 
 	@JsonProperty("maintainer")
@@ -147,7 +149,7 @@ public class Common {
 	public void setVersion(Long version) {
 		this.version = version;
 	}
-
+	
 	public String getAuthorContact() {
 		return authorContact;
 	}
diff --git a/src/test/java/org/gcube/data_catalogue/grsf_publish_ws/JTests.java b/src/test/java/org/gcube/data_catalogue/grsf_publish_ws/JTests.java
index 851f8bb..1dda0d7 100644
--- a/src/test/java/org/gcube/data_catalogue/grsf_publish_ws/JTests.java
+++ b/src/test/java/org/gcube/data_catalogue/grsf_publish_ws/JTests.java
@@ -108,6 +108,9 @@ public class JTests {
 		FisheryRecord recordFishery = new FisheryRecord();
 		recordFishery.setType(Type.Fishing_Description);
 		recordFishery.setDatabaseSources(Source.FIRMS);
+		recordFishery.setAuthor("Costantino Perciante");
+		recordFishery.setMaintainer("Costantino Perciante");
+		recordFishery.setAuthorContact("costantino.perciante@isti.cnr.it");
 		recordFishery.setStatus(Status.Pending);
 		recordFishery.setVersion(new Long(10));
 		HashMap<String, String> extras = new HashMap<String, String>();