diff --git a/src/main/java/org/gcube/datacatalogue/common/Constants.java b/src/main/java/org/gcube/datacatalogue/common/Constants.java
index e46a51a..79264e6 100644
--- a/src/main/java/org/gcube/datacatalogue/common/Constants.java
+++ b/src/main/java/org/gcube/datacatalogue/common/Constants.java
@@ -158,7 +158,10 @@ public class Constants {
 	public static final String ANNOTATION = "annotation_message";
 	public static final String SHORT_NAME_OLD = "short_name_old";
 	public static final String SHORT_NAME_NEW = "short_name_new";
+	public static final String SDG_FLAG = "sdg_flag";
 	public static final String TRACEABILITY_FLAG = "traceability_flag";
+	public static final String GRSF_TYPE_OLD = "grsf_type_old";
+	public static final String GRSF_TYPE_NEW = "grsf_type_new";
 	public static final String SIMILAR_GRSF_RECORDS = "similar_grsf_records";
 	public static final String SUGGESTED = "suggested";
 	public static final String MERGE = "merge";