Reference to TU line number, used in pack orders

ordchg_Examples
 <documentReference documentType="BuyerOrder" id="Sample_PO0000105" date="2020-08-25" lineNo="2" parentLineNo="1"> 
ordchg_XPATH

/b24Message/orderChange/item/documentReference[@documentType="BuyerOrder"]/@parentLineNo

ordchg_Edifact_Path
ORDCHG.LIN.RFF.C506.1154
ordchg_Edifact_Qualifiers
ORDCHG.LIN.RFF.1153 = PLN
ordchg_edifact_sample
FTX+PLN+++1'
ordchg_Required
No
ordchg_Type
Text
ordchg_Sort
12200