<xs:complexTypename="SubmissionHeader"xmlns:xs="http://www.w3.org/2001/XMLSchema"><xs:annotation><xs:documentation>Required header level elements for an Enhanced Reporting Submission.</xs:documentation></xs:annotation><xs:sequence><xs:elementname="EmployerRegistrationNumber"type="pc:employerReg"><xs:annotation><xs:documentation>Data Item Ref: 1. Employer's PAYE Registration Number.</xs:documentation></xs:annotation></xs:element><xs:elementname="AgentTain"type="pc:agentTAIN"minOccurs="0"><xs:annotation><xs:documentation>Data Item Ref: 2. Tax Advisor Identification Number. Required if submission is filed by agent on behalf of employer.</xs:documentation></xs:annotation></xs:element><xs:elementname="EnhancedReportingRunReference"type="pc:enhancedReportingRunReference"><xs:annotation><xs:documentation>Data Item Ref: 4. Enhanced Reporting Run Reference. Used to identify the event to which the submission refers.</xs:documentation></xs:annotation></xs:element><xs:elementname="TaxYear"type="pc:taxYear"><xs:annotation><xs:documentation>Data Item Ref: 6. Tax year to which the submission relates (YYYY).</xs:documentation></xs:annotation></xs:element><xs:elementname="SoftwareUsed"type="pp:SoftwareUsed"><xs:annotation><xs:documentation>Data Item Refs: 7 and 8. Third party software product identifier.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:complexType>