ArcGIS REST Services Directory
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Relationships : (AGOL/Curb_Inspection_editing)

{"relationships": [{
 "id": 0,
 "name": "Address_Parcel_Has_Curb_Inspection",
 "catalogID": "{917A5053-47CC-43C3-9C43-F1127A2E4A21}",
 "backwardPathLabel": "Address_Parcel_Curb_Inspection",
 "originLayerId": 0,
 "originPrimaryKey": "PID",
 "forwardPathLabel": "Curb_Inspections",
 "destinationLayerId": 1,
 "originForeignKey": "PID",
 "rules": [],
 "cardinality": "esriRelCardinalityOneToMany",
 "attributed": false,
 "composite": false
}]}