diff --git a/cg/cg4700a.uml b/cg/cg4700a.uml
index 0e9eb03df..9c412b601 100755
--- a/cg/cg4700a.uml
+++ b/cg/cg4700a.uml
@@ -75,7 +75,8 @@ BEGIN
   DISPLAY "Anno" CODTAB[6,9]
   OUTPUT F_CODDITTA CODTAB[1,5]
   OUTPUT F_ANNO CODTAB[6,9]
-  VALIDATE FIXLEN_FUNC 4
+  VALIDATE FIXLEN_FUNC 4    
+  FLAGS "Z"
 END
   
 NUMBER F_ACCONTO 15