How to declare element

Question

I\'m looking for validate an XML document with xrm prefix as you can read here :

I wrote the following XML Schema :

Answer 1

xrm is a namespace prefix, an abbreviation for the namespace. As the syntax error indicates, a namespace prefix is not declared via xsd:element/@name. Instead, declare only the local name (plugin) and handle the namespace prefix declaration at the XSD level...

Here is a simplified set of your XML and XSD where the XML validates successfully against the XSD:

XML

  
    
      MPD_4.1.1.0
       
      SC-DIF-OT3402-0002-MOSS 1.8 - DIF COSCA Inc.2.doc
      
        Générateur de mapping v1.0
        14/01/2013
        Génération du fichier de mapping
      
    
  

XSD