curl --request PATCH \
  --url https://api-m.sandbox.paypal.com/v2/checkout/orders/{id}/trackers/{tracker_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
[
  {
    "op": "replace",
    "path": "/purchase_units/@reference_id=='PUHF'/shipping/address",
    "value": {
      "address_line_1": "2211 N First Street",
      "address_line_2": "Building 17",
      "admin_area_2": "San Jose",
      "admin_area_1": "CA",
      "postal_code": "95131",
      "country_code": "US"
    }
  }
]
EOF

{
  "name": "INVALID_REQUEST",
  "message": "Request is not well-formed, syntactically incorrect, or violates schema.",
  "details": [
    {
      "issue": "FIELD_NOT_PATCHABLE",
      "field": "<string>",
      "value": "<string>",
      "location": "body",
      "description": "Field cannot be patched."
    }
  ],
  "debug_id": "<string>",
  "links": [
    {
      "href": "<string>",
      "rel": "<string>",
      "method": "GET"
    }
  ]
}