<xs:complexTypename="SubmissionHeader"xmlns:xs="http://www.w3.org/2001/XMLSchema"><xs:annotation><xs:documentation>Required header level elements for a payroll 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 payroll submission is filed by agent on behalf of employer.</xs:documentation></xs:annotation></xs:element><xs:elementname="PayrollRunReference"type="pc:PayrollRunReference"><xs:annotation><xs:documentation>Data Item Ref: 4. Payroll Run Reference. Used to identify the Payroll event that the submission refers to e.g. ‘Site_1_Week_1’.</xs:documentation></xs:annotation></xs:element><xs:elementname="TaxYear"type="pc:dateYear"><xs:annotation><xs:documentation>Data Item Ref: 5. Used to identify the 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: 6 and 7. Third party software product identifier.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:complexType>