diff --git a/src/main/java/org/gcube/datacatalogue/common/Constants.java b/src/main/java/org/gcube/datacatalogue/common/Constants.java
index a92e72d..a5aa730 100644
--- a/src/main/java/org/gcube/datacatalogue/common/Constants.java
+++ b/src/main/java/org/gcube/datacatalogue/common/Constants.java
@@ -84,6 +84,8 @@ public class Constants {
 	public static final String ASSESSOR_JSON_KEY = "assessor";
 	public static final String SPATIAL_GEOJSON_JSON_KEY = "spatial";
 	public static final String SPATIAL_GEOJSON_CUSTOM_KEY = "spatial";
+	public static final String FISHERY_URI = "fishery_uri";
+	public static final String STOCK_URI = "stock_uri";
 
 	// fishery record
 	public static final String FISHERY_NAME_CUSTOM_KEY = "Fishery Name";