diff --git a/src-db/database/model/functions/M_GET_STOCK_PARAM.xml b/src-db/database/model/functions/M_GET_STOCK_PARAM.xml
--- a/src-db/database/model/functions/M_GET_STOCK_PARAM.xml
+++ b/src-db/database/model/functions/M_GET_STOCK_PARAM.xml
@@ -67,6 +67,15 @@
       <parameter name="p_message" type="VARCHAR" mode="out">
         <default/>
       </parameter>
+      <parameter name="p_avail" type="CHAR" mode="in">
+        <default><![CDATA[NULL]]></default>
+      </parameter>
+      <parameter name="p_nett" type="CHAR" mode="in">
+        <default><![CDATA[NULL]]></default>
+      </parameter>
+      <parameter name="p_overissue" type="CHAR" mode="in">
+        <default><![CDATA[NULL]]></default>
+      </parameter>
       <body><![CDATA[/*************************************************************************
 * The contents of this file are subject to the Openbravo  Public  License
 * Version  1.1  (the  "License"),  being   the  Mozilla   Public  License
