diff --git a/include/class/noalyss_parameter_folder.class.php b/include/class/noalyss_parameter_folder.class.php
index 18502ed43..b3e48b7f7 100644
--- a/include/class/noalyss_parameter_folder.class.php
+++ b/include/class/noalyss_parameter_folder.class.php
@@ -51,8 +51,10 @@ class Noalyss_Parameter_Folder
     var $MY_CURRENCY;
     var $MY_COUNTRY_CODE;
     var $MY_REPORT; //!< In Belgium , we need a report on the beginning of the exercice , not in France,
-
+    var $MY_INVOICE_FORMAT; //!< Default invoice format : BASIC, UBL21BEL, FACTURXFR
     
+    
+    const VALID_INVOICE_FORMAT=['BASIC','UBL21BEL','FACTURXFR'];
     // constructor
     function __construct($p_cn)
     {
@@ -94,11 +96,16 @@ MY_DEFAULT_ROUND_ERROR_DEB= [	{$this->MY_DEFAULT_ROUND_ERROR_DEB }]
 MY_DEFAULT_ROUND_ERROR_CRED= [	{$this->MY_DEFAULT_ROUND_ERROR_CRED }]
 MY_ANC_FILTER= [	{$this->MY_ANC_FILTER }]
 MY_REPORT = [ {$this->MY_REPORT } ]
-
+MY_INVOICE_FORMAT = [ {$this->MY_INVOICE_FORMAT} ]
 EOF;
         return $r;
     }
-
+    /**
+     * @brief check that the filter for ANC operation is valid
+     * @param $p_value (string)  list of digit for accounting separated by comma
+     * @return void
+     * @throws  if value contains a no-digit value
+     */
     function check_anc_filter($p_value):void
     {
         $tmp_value=$p_value;
@@ -138,12 +145,17 @@ EOF;
                 }
 
                 break;
+            case 'MY_INVOICE_FORMAT':
+                if ( !in_array($this->MY_INVOICE_FORMAT, Noalyss_Parameter_Folder::VALID_INVOICE_FORMAT))
+                {
+                    throw new \Exception ('Format facture invalide');
+                }
             default :
                 $ret_value=htmlspecialchars($p_value);
         }
         return $ret_value;
     }
-
+    
     /*!
      **************************************************
      * \brief  save the parameter into the database by inserting or updating
@@ -208,6 +220,7 @@ EOF;
         $this->save('MY_DEFAULT_ROUND_ERROR_CRED');
         $this->save("MY_ANC_FILTER");
         $this->save("MY_REPORT");
+        $this->save("MY_INVOICE_FORMAT");
 
     }
     /**
@@ -226,5 +239,15 @@ EOF;
         }
         return FALSE;
     }
-
-}
+    /**
+     * @brief build a SELECT html input
+     * @return \ISelect
+     */
+    function input_select_format() {
+        $select_format_invoice=new \ISelect('invoice_format');
+        $a_label=[_("Basic"),_("UBL21 Belgique"),_("FacturX France")];
+        $select_format_invoice->transform(array_combine(Noalyss_Parameter_Folder::VALID_INVOICE_FORMAT,$a_label));
+        $select_format_invoice->selected=$this->MY_INVOICE_FORMAT;
+        return $select_format_invoice;
+    }
+}
\ No newline at end of file
diff --git a/include/company.inc.php b/include/company.inc.php
index 065fd159f..40876332c 100644
--- a/include/company.inc.php
+++ b/include/company.inc.php
@@ -55,6 +55,7 @@ if (isset($_POST['record_company']))
     $m->MY_DEFAULT_ROUND_ERROR_CRED=$http->post("p_round_error_cred");
     $m->MY_ANC_FILTER=$http->post("p_anc_filter");
     $m->MY_REPORT=$http->post("p_report");
+    $m->MY_INVOICE_FORMAT=$http->post("invoice_format");
     try
     {
         $m->update();
@@ -138,6 +139,13 @@ $report->value = array(
 );
 $report->selected=$my->MY_REPORT;
 
+// invoice format 
+$select_format_invoice=$my->input_select_format();
+
+
+
+
+
 // other parameters
 $all=new IText();
 $all->table=1;
@@ -361,7 +369,12 @@ echo Icon_Action::tips($anc_filter->title);
                     <?= $default_error_cred->input() ?>
             </div>
 
-
+     <div class="form-group">
+                <label class="" for="invoice_format">
+                <?= _("Format de facture par défaut") ?>
+                </label>
+                    <?= $select_format_invoice->input() ?>
+            </div>
                 <div class="col-4"></div>
 
                 <div class="col-4">
diff --git a/sql/upgrade.sql b/sql/upgrade.sql
index 9ffde47cd..f84d648f5 100644
--- a/sql/upgrade.sql
+++ b/sql/upgrade.sql
@@ -290,3 +290,5 @@ insert into quantity_code_ref values
 ('ROLL','Roll — rouleau'),
 ('COLL','Collection — collection');
 
+
+insert into "parameter" values ('MY_INVOICE_FORMAT','BASIC');