The parent package hierarchy identity. Every package except the root package must reference their parent

desadv_Examples
 <package packageType="PX" quantity="2" hierarchyIdentity="2" parentHierarchyIdentity="1" SSCC="00173500538500000016" /> 
desadv_XPATH

/b24Message/despatchAdvice/package/@parentHierarchyIdentity

desadv_Required
No
desadv_Type
Number
desadv_Sort
12100
Desadv_Edifact_Path
DESADV.CPS.7166
Desadv_Edifact_Qualifiers
N/A
Desadv_Edifact_Sample

CPS+2+<b>1</b>'