The order line number of the product, set by the supplier.

ordrsp_Examples
 <documentReference documentType="SupplierOrder" id="24123456" date="2020-08-26" lineNo="2"> 
ordrsp_XPATH

/b24Message/orderResponse/item/documentReference[@documentType="SupplierOrder"]/@lineNo

ordrsp_Type
Number
ordrsp_Sort
11500