Problem to validate XML with XML Schema

Good morning,

unfortunately I have at the same problem to validate an XML document across
an easy XML Schema.

I'm using Xerces 2.6.0 version, and i can't understand why in my console
there is this particular error:

 

 [Error] InvoiceXML.xml:4:21: cvc-elt.1: Cannot find the declaration of
element 'Invoice'.

 

I modified the header of my XML schema and XML document, but I always have
the error. I'm sure that the mistake was created from my header. Please what
mistakes I'm doing?

Under I wrote the header of my two document. The first is my XML Document
and the second is my XML Schema.

 

 

XML DOCUMENT:

 

<Invoice xsi:schemaLocation="http://localhost:8080
http://localhost:8080/InvoiceXML.xsd" 

 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance  http://localhost:8080"

                         xmlns="http://localhost:8080"

                         DocType="Delete">

 

 

XML SCHEMA:

 

<?xml version="1.0" encoding="UTF-8"?>

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"

            targetNamespace="http://localhost:8080" 

            xmlns="http://localhost:8080"

            elementFormDefault="qualified">

 

Please, help me.

Regards

          Gianni