Reference to the buyer order number

desadv_Examples
 <documentReference documentType="BuyerOrder" id="Sample_PO0000105" date="2020-08-25" /> 
desadv_XPATH

/b24Message/despatchAdvice/documentReference[@documentType="BuyerOrder"]/@id

desadv_Required
No
desadv_Type
Text
desadv_Sort
1800
Desadv_Edifact_Path
DESADV.RFF.C506.1153
Desadv_Edifact_Qualifiers
DESADV.RFF.C506.1154="ON"
Desadv_Edifact_Sample

RFF+ON:<b>Sample_PO0000105</b>'