Undefined index: faxNumber

Bonjour,

J'ai ajouté une variable pour ajouter un numéro de fax et voici l'erreur...

Que veut dire ce message d'erreur ?
Code:
1
2
3
4
5
6
7
8
9
10
11
(8) Undefined index: faxNumber   c_1_site_item_tpl.php   line 31     1-2-11   10:57  
FrontController->dispatch() # line   18, file: /homez.324/materielop/www/index.php
  Controller->render() # line  225, file: /homez.324/materielop/www/core/FrontController.php
    TemplateLiteView->render(Object:SiteController) # line  167, file: /homez.324/materielop/www/core/Controller.php
      Template_Lite->fetch("site/topReferrers.tpl") # line   77, file: /homez.324/materielop/www/views/TemplateLiteView.php
        Template_Lite->_fetch_compile("site/topReferrers.tpl", null) # line  360, file: /homez.324/materielop/www/components/template_lite/class.template.php
          include("/homez.324/materielop/www/compiled/arfooo_template/fr/c_1_site_t...") # line  482, file: /homez.324/materielop/www/components/template_lite/class.template.php
            Template_Lite->_fetch_compile_include("site/item.tpl", Array[1]) # line   26, file: /homez.324/materielop/www/compiled/arfooo_template/fr/c_1_site_topReferrers_tpl.php
              template_fetch_compile_include("site/item.tpl", Array[1], Object:Template_Lite) # line  463, file: /homez.324/materielop/www/components/template_lite/class.template.php
                Template_Lite->_fetch_compile("site/item.tpl") # line   30, file: /homez.324/materielop/www/components/template_lite/internal/template.fetch_compile_include.php
                  include("/homez.324/materielop/www/compiled/arfooo_template/fr/c_1_site_i...") # line  482, file: /homez.324/materielop/www/components/template_lite/class.template.php
Cordialement