String encoded to XML based on XSD

Content

Hi, 

I have this code in a String. 

<supplierData>&lt;?xml version = '1.0'?>
&lt;FusionSupplierXML>
   &lt;DocumentHeader>
      &lt;DocumentName>Oracle Fusion Supplier XML&lt;/DocumentName>
      &lt;Version>1.1&lt;/Version>
      &lt;Language>en&lt;/Language>
      &lt;DocumentCreationDate>2020-02-03T18:25:30.000+0000&lt;/DocumentCreationDate>
      &lt;ReferenceId>56501&lt;/ReferenceId>
   &lt;/DocumentHeader>
   &lt;Supplier>
      &lt;SupplierName>Mouse Manufacturing&lt;/SupplierName>
      &lt;SupplierNumber>10078&lt;/SupplierNumber>
      &lt;TaxOrganizationType>CORPORATION&lt;/TaxOrganizationType>
      &lt;SupplierType>SUPPLIER&lt;/SupplierType>
      &lt;CreationSource>MANUAL&lt;/CreationSource>
      &lt;OneTimeSupplier>N&lt;/OneTimeSupplier>
      &lt;TaxpayerCountry>BR&lt;/TaxpayerCountry>
      &lt;TaxpayerID>44413907000158&lt;/TaxpayerID>
      &lt;FederalReportable>N&lt;/FederalReportable>
      &lt;StateReportable>N&lt;/StateReportable>