diff --git a/ba/batb%iva.uml b/ba/batb%iva.uml
index 43eedec2a..74025f800 100755
--- a/ba/batb%iva.uml
+++ b/ba/batb%iva.uml
@@ -14,6 +14,7 @@ BEGIN
   FIELD CODTAB
   KEY 1
   USE %IVA
+  FLAGS "U"
   INPUT CODTAB FLD_TABIVA_CODTAB
   DISPLAY "Codice" CODTAB
   DISPLAY "Descrizione@50" S0