diff --git a/src/ca/ca0300a.uml b/src/ca/ca0300a.uml
index 9b4864153..7fe710aec 100755
--- a/src/ca/ca0300a.uml
+++ b/src/ca/ca0300a.uml
@@ -334,8 +334,8 @@ BOOLEAN F_USE_PDCC
 BEGIN
   PROMPT 2 11 "Utilizza il piano dei conti contabile"
   FIELD UsePdcc
-  MESSAGE FALSE HIDE,F_PREFIX
-  MESSAGE TRUE SHOW,F_PREFIX
+  MESSAGE FALSE HIDE,F_PREFIX|REQUIRED,F_PDCI_1
+  MESSAGE TRUE SHOW,F_PREFIX|NORMAL,F_PDCI_1
 END
 
 LIST F_PREFIX 1 10
@@ -365,6 +365,7 @@ BEGIN
   MESSAGE EMPTY CLEAR,F_PDCI_2|CLEAR,F_DESPDCI_2|K_TAB,F_PDCI_2|RESET,F_DESPDCI_1
   MESSAGE ENABLE,F_PDCI_2|ENABLE,F_DESPDCI_2
   FIELD Pdci(1)
+  WARNING "Livello piano dei conti obbligatorio"
 END
 
 STRING F_DESPDCI_1 50